JP2000293536A - Data processing device - Google Patents

Abstract

(57) [Summary] [Problem] Conventionally, since all record data is transferred to a database processing unit via a system bus, it takes time to transfer the record data, and it takes time until the end of the sorting process. It was hanging. SOLUTION: Based on an instruction from a central processing unit, the disk system unit on which predetermined data is recorded, and directly reads the predetermined data recorded on the disk system unit based on an instruction from a central processing unit, A database processing unit for performing predetermined database processing on the read predetermined data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processor for executing a database operation process before sending record data of a disk device to a system bus.

[0002]

2. Description of the Related Art A conventional example of such a data processing apparatus will be described with reference to FIG. FIG. 8 is a functional block diagram showing a configuration of a conventional data processing device. In FIG. 8, reference numeral 10 denotes a central processing unit (hereinafter, referred to as a CPU).
It is. Reference numeral 11 denotes a system bus to which the CPU 10 is connected. Reference numeral 12 denotes a main memory, and a system bus 11
Connected to. Reference numeral 13 denotes a disk controller, which is connected to the system bus 11. 14 is a disk device,
Connected to the disk controller 13. Reference numeral 15 denotes a sorter interface device (hereinafter, referred to as a sorter I / F device), which is connected to the system bus 11. Reference numeral 16 denotes a database operation device, which is connected to the sorter I / F device 15. A sort processing device 17 is connected to the database operation device 16.

Next, the operation of the conventional data processing apparatus shown in FIG. 8 will be described. First, the disk unit 14 of the data processing apparatus has a database processing unit 16
And record data to be operated on by the sort processing device 17. In the database operation processing device 16, processing such as selection and projection is performed on record data to be operated. The selection process is to extract a specific line (record) from a record data file. Further, the projection processing means to extract only a specific column (data item) from a file of record data. In the sort processing device 17, the sort processing is performed on the record data to be calculated. Note that the sort processing is to sort arbitrary record data in ascending or descending order based on a certain condition.

When the user of the data processing device requests the record data stored in the disk device 14 to execute a database operation process such as selection or projection or a sort process, the CPU of the data processing device issues a request.
Reference numeral 10 outputs a predetermined signal to the sorter I / F device 15. All record data is transferred from the disk device 14 via the main memory 12, the system bus 11, and the sorter I / F device 15 to the database operation processing device 1.
6 is transferred.

[0005] In this database processing unit 16,
When the record data is transferred, a database operation process is performed on the record data. When the database operation processing is executed by the database operation processing device 16, the obtained record data of the execution result is transferred to the sort processing device 17.

When transferring the record data from the database processing unit 16 to the sort processing unit 17, the sorter I / F unit 15 adds a predetermined flag to the record data or matches the flag to the processing unit of the sort processing unit 17. The record data is aligned so that the sort processing can be easily executed. The flag added to the record data by the sorter I / F device 15 indicates that the data is the first record data to be transferred, the last record data, or the like.

[0007] When the record data is transferred, the sort processing device 17 executes a sort process on the record data. The record data subjected to the database operation processing and the sort processing are stored in a sorter I / F device 15, a database operation processing device 16, a main memory 12, a system bus 11, and a disk control device 13.
Is stored in the disk device 14 via the.

[0008]

As described above, the conventional data processing apparatus performs a database operation process such as selection and projection performed by the database operation processing unit 16.
Even when the record data length of the record data to be sorted is reduced or the number of record data is reduced, all the record data is transferred from the disk device 14 to the database via the main memory 12 or the system bus 11. Since the data is transferred to the arithmetic processing unit 16, it takes time to transfer the record data, and it takes time to finish the sorting process.

In addition, selection and
Even when it is desired to execute only the projection processing, the disk drive 14
Must be transferred to the database processing unit 16 via the system bus 11, and the transfer of record data between the disk unit 14 and the database processing unit 16 (round trip) is required. It takes a long time, and competition of the system bus 11 is likely to occur.

The present invention has been made to solve these problems. When a disk device is connected to a selection / projection device without using a system bus and a sort process is performed, recording is performed on the disk device. After selecting and projecting all the record data that has been selected and projected by the selecting and projecting device, that is, reducing the record data length or reducing the number of record data, via the system bus,
An object of the present invention is to provide a data processing device that transfers only target record data to a sort processing device and that can reduce the amount of record data transferred to a system bus.

Further, there is provided a data processing device capable of executing selection / projection processing on all record data recorded on a disk device without passing through a system bus when only selection / projection processing is to be executed.

[0012]

A data processing device according to the present invention is connected to a disk system unit in which predetermined data is recorded, and connected to the disk system unit. A database processing unit that directly reads the recorded predetermined data and performs a predetermined database process on the read predetermined data.

Further, a data processing apparatus according to the present invention is connected to a plurality of disk system units on which predetermined data is recorded, and to a plurality of disk system units. A database processing unit that directly reads the recorded predetermined data and performs a predetermined database process on the read predetermined data.

Further, the data processing apparatus according to the present invention reads the processed data processed by the database processing section via the system bus based on an instruction from the central processing section, and performs a sorting process on the processed data. It has a sorting system unit for performing the sorting.

Further, a data processing device according to the present invention is connected to a plurality of disk system units on which predetermined data is recorded, and a plurality of disk system units, respectively.
A plurality of database processing units for directly reading predetermined data recorded in the disk system unit based on an instruction from the central processing unit and performing predetermined database processing on the read predetermined data; .

Further, the data processing apparatus according to the present invention is connected to a plurality of disk system sections in which predetermined data is recorded, and to the plurality of disk system sections. A plurality of large-capacity intelligent system units including a database processing unit for directly reading recorded predetermined data and performing predetermined database processing on the read predetermined data are provided.

Further, the data processing apparatus according to the present invention reads processing data processed by each database processing section via a system bus based on an instruction from a central processing section, and sorts the processed data into a sort processing. And a sorting system unit for performing

Further, in the data processing apparatus according to the present invention, the database processing includes a selection processing.

In the data processing apparatus according to the present invention, the database processing includes a projection processing.

Further, in the data processing apparatus according to the present invention, the disk system unit includes a disk unit, and a disk control unit connected to the disk unit and the database processing unit.

Further, in the data processing apparatus according to the present invention, the sort system section includes a sort processing section, and a sorter interface section connected to the sort processing section and a system bus.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 One embodiment of a data processing device according to the present invention will be described with reference to FIG. FIG. 1 is a functional block diagram showing the configuration of the data processing device according to the first embodiment of the present invention. In FIG. 1, 1
Reference numeral 8 denotes a host device, which includes a CPU 10, a system bus 1
1 and a main memory (main memory) 12, and a CPU
10 is controlled. The main memory 12 has a CPU
A microprogram for operating the device 10 is stored. Reference numeral 19 denotes a disk system, which includes a disk control device 13 and a disk device 14.

Reference numeral 20 denotes a selection / projection device, which is connected to the system bus 11 and the disk control device 13. In addition,
The selection / projection device 20 requires a selection / projection process from the CPU 10. Reference numeral 21 denotes an intelligent disk system, which includes the selection / projection device 20 and the disk system 1
9 Sorter I / F device 15 is connected to system bus 11 and sort processing device 17. The sorter I / F device 15 is requested by the CPU 10 to perform a sort process, and causes the sort processing device 17 to execute.

The sorter I / F device 15 and the sort processing device 17 are collectively referred to as a sort system. Also, in FIG. 1, the same or corresponding parts as those in the conventional example shown in FIG. 8 are denoted by the same reference numerals, and the description thereof is omitted, and the parts different from FIG.

Next, the configuration of the selection / projection device 20 included in the data processing device of the first embodiment shown in FIG.
This will be described with reference to FIG. FIG. 2 is a functional block diagram illustrating a configuration of the selection / projection device 20 included in the data processing device of the present embodiment. In FIG. 2, reference numeral 22 denotes a memory, which is connected to the system bus 11. A selection / projection control device 23 is connected to the memory 22. Reference numeral 24 denotes a microprocessor unit (MPU), which is connected to the selection / projection control device 23. Reference numeral 25 denotes a memory, which is connected to the selection / projection control device 23 and the MPU 24. The memory 22 and the selection / projection control device 23 are connected to the disk control device 13. In FIG. 2, FIG.
The same reference numerals are given to the same or corresponding parts as in the example shown in FIG. 1 and the description is omitted, and the parts different from FIG. 1 are described.

Next, the operation of the data processing apparatus according to the first embodiment shown in FIG. 1 will be described. When executing the selection / projection process, the CPU 10 sets parameters necessary for the selection / projection process in the selection / projection device 20 and the selection / projection device 2
0 is activated. Note that the parameters required for the selection process include a parameter to be selected and a parameter such as the number (byte number) from the beginning of the record data. The parameters required for the selection process include which column (or columns) to project, the number of the column (the number of bytes) from the beginning of the record data, and the number of bytes of the record data. Is a parameter.

Further, when executing the sort processing, the CPU 10 sets parameters necessary for the sort processing in the sorter I / F device 15 and activates the sorter I / F device 15.
Note that parameters necessary for the sorting process include a record length, the number of records, a key length, a key position, and the like. Choice·
The projection device 20 reads record data to be processed from the disk device 14. When the selection / projection process is performed by the selection / projection device 20, the selection / projection process is performed on the record data based on the parameters set by the CPU 10.

Further, when the sort processing is performed by the sort processing device 17, the sorter I / F device 15 records the record data resulting from the selection and projection processing by the selection and projection device 20.
The record data is read via the system bus 11 and transferred to the sort processing device 17. The record data sorted by the sort processing device 17 is transmitted from the sort processing device 17 to the sorter I / F device 15 and the system bus 1.
1, and is transferred to the disk control device 13 via the selection / projection device 20, and then stored in the disk device 14.

When the CPU 10 executes only the selection / projection processing and does not execute the sort processing, the CPU 10 sets necessary parameters relating to the selection / projection processing only in the selection / projection apparatus 20 and performs selection / projection. Only the device 20 is activated. Then, the selection / projection device 20 reads the record data to be processed from the disk device 14 via the disk control device 13, and performs a predetermined selection / projection process on the record data. Then, the selected / projected record data is transferred from the selection / projection device 20 to the disk control device 13 and stored in the disk device 14.

Next, the operation of the data processing apparatus of the present embodiment will be described with reference to FIG. FIG. 3 is a flowchart showing the operation of the data processing device of the present embodiment. In step (hereinafter referred to as S) 1, when the CPU 10 of the data processing device is requested to execute the selection process, the projection process, or the sort process, the selection / projection device 20 reads the record data from the disk device 14. . When S1 ends, the process proceeds to S2.

In S2, the CPU 10 determines whether execution of the projection process has been requested. If the execution of the projection process has been requested, the process proceeds to S3. If not, the process proceeds to S4. In S3, the selection / projection device 2
0 executes a projection process on the record data. When S3 ends, the process proceeds to S4. In S4, the CP
U10 determines whether execution of the selection process is requested. If execution of the selection process is requested, S
Go to 5. If not, proceed to S6.

In S5, the selection / projection device 20 executes a projection process on the record data. When S5 ends, the process proceeds to S6. In S6, the CPU 10 determines whether execution of the sort process is requested. If the execution of the sort processing is requested, S7
Proceed to. If not, the process proceeds to S10.

In S7, the selection / projection device 20 transfers the record data to the sort processing device 17 via the sorter I / F device 15. When S7 ends, S
Proceed to 8. In S8, the sort processing device 17 executes a sort process on the record data. When S8 ends, the process proceeds to S9. In S9, the sort processing device 17 transfers and stores the record data to the disk device 14 via the selection / projection device 20. Note that the order of the projection processing and the selection processing may be the reverse of the above-described flow. That is, the projection processing may be performed after the selection processing.

The selection process is to extract a specific row (record) from the record data file, and the projection process is to extract a specific column (data item) from the record data file. Alternatively, the selection process may extract a specific column from the record data file, and the projection process may extract a specific row from the record data file.

For example, a change in data when the selection processing and the projection processing are performed in the data processing apparatus of the present embodiment will be described with reference to FIG. FIG. 4 is a conceptual diagram showing the concept of the selection processing and the projection processing in the data processing device of the present embodiment.

FIG. 4A shows basic data representing a record of record data recorded on the disk device 14 in a database. The database with this basic data
It consists of four columns (columns): “Name”, “Age”, “Home address”, and “Occupation”. This database contains 4
One record is recorded. Note that a record is
This is a collection of data on "age,""homeaddress," and "occupation" for a person with a certain "name."

The four records recorded in the database of FIG. 4A are (name: Yamaguchi, age: 25, permanent register: Saga, occupation: company employee), (name: Hashimoto, age: 2)
2, permanent residence: Saitama, occupation: doctor), (name: Miura, age:
21, permanent register: Yamagata, occupation: self-employed), and (name: Miyata, age: 24, permanent register: Chiba, occupation: unemployed).

FIG. 4 (b) is a database formed when the selection process of "selecting the age of 23 or older" is performed on the basic data shown in FIG. 4 (a). as a result,
Two records whose data on "age" is "23 years or older" are selected. That is, (name: Yamaguchi, age:
25, permanent residence: Saga, occupation: company employee) and (name: Miyata,
(Age: 24, permanent residence: Chiba, occupation: unemployed).

FIG. 4C is a database formed when a projection process of “projecting a name and a permanent address” is performed on the basic data shown in FIG. 4A. As a result, 4
The data of “name” and the data of “genki” are extracted from each record, the records are reorganized, and the record length is shortened. In other words, (name: Yamaguchi, permanent domicile:
(Saga), (Name: Hashimoto, permanent residence: Saitama), (Name: Miura,
A database is formed from four books: permanent register: Yamagata) and (name: Miyata, permanent register: Chiba). In other words, it can be said that this database has only two columns (columns) of "name" and "main address".

FIG. 4D shows a case where a projection process of “projecting a name and a permanent address” and a selection process of “real address is Kanto” are performed on the basic data shown in FIG. 4A. The database to be formed. First, by the projection process,
The data of "name" and the data of "main address" are respectively extracted from the four records, the records are reorganized, and the record length is shortened. In other words, this database
It consists of two columns (columns): "Name" and "Honki". The records are (Name: Yamaguchi, Honjo: Saga), (Name: Hashimoto, Honjo: Saitama), (Name: Miura, Honjo: Yamagata), and (Name: Miyata, permanent residence: Chiba).

Further, by the selection process, two records in which the data relating to the "main address" is "Kanto" are selected. In other words, (name: Hashimoto, permanent address: Saitama) and (name:
Miyata, permanent residence: Chiba). By these processes, the number of required records is reduced, and the record length of each record is also reduced.

As described above, the sort processing device 17 of the data processing device according to the present embodiment is
Since the record data subjected to the projection processing and having a short data length or a small number of data is transferred to the sort processing device 17 via the system bus 11 and subjected to the sort processing, the throughput of the entire device can be improved.

When only the selection / projection processing is executed by the data processing apparatus of the present embodiment, there is no record data transferred on the system bus 11 for the selection / projection processing. Of the system bus 11 can be prevented, and the throughput of the entire apparatus can be improved.

Embodiment 2 Another embodiment of the data processing device according to the present invention will be described with reference to FIG. FIG. 5 is a functional block diagram showing the configuration of the data processing device according to the second embodiment of the present invention. In FIG. 5, the host device 18 includes a selection / projection device 20 and a sorter I / F device 1.
5 is connected. In the data processing device of the present embodiment, 2 to K intelligent disk systems 21 are connected to the system bus 11 in parallel.

In FIG. 5, the same or corresponding parts as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted. The parts different from FIG. 1 will be described. That is, in the first embodiment, one intelligent disk system 21 is connected to the system bus 11, whereas in the second embodiment, a plurality of intelligent disk systems 21 are connected to the system bus 11 in parallel. . The data processing device according to the present embodiment includes:
This is effective when increasing the capacity of the disk system 19 and performing parallel processing.

Next, the operation of the data processing apparatus according to the second embodiment shown in FIG. 5 will be described. Each disk drive 14
Select and select the record data recorded in
When performing the projection processing, the CPU 10 sets parameters necessary for executing the selection / projection processing for each of the selection / projection apparatuses 20 connected to the respective disk devices 14, and sets each selection / projection processing. Activate the projection device 20. When the sort process is performed on the record data of each disk device 14, the CPU 10
The parameters required for executing the sort processing are set in the / F device 15 and the sort processing device 17 is started.

Each intelligent disk system 21 having the selection / projection device 20 is connected to the system bus 1
1, each intelligent disk system 21 can execute the selection / projection processing in parallel. In addition, selection of each intelligent disk system 21
The selection / projection processing is performed by the projection device 20, and the obtained record data is transferred to the sorter I via the system bus 11.
/ F device 15. And that sorter I /
The record data read by the F device 15 is transferred to the sort processing device 17.

Thereafter, as a result of the sort processing performed by the sort processing device 17, the obtained record data is output from the sort processing device 17, and is sorted by the sorter I / F device 15, the system bus 11, and the selection / projection device 20. Is input to the disk control device 13 via the storage device and stored in the corresponding disk device 14.

As described above, by providing a plurality of intelligent disk systems 21 in parallel, the selection / projection processing can be performed in parallel. Therefore, even if the record data capacity of the entire data processing apparatus becomes large, the selection / projection processing can be performed.
The time required for the projection process can be reduced. Further, by directly connecting the disk device 14 and the selection / projection device 20 via the disk control device 13 and not via the system bus 11 between them, it is possible to suppress competition of the system bus 11 and the like, Throughput of the entire processing apparatus can be improved.

Embodiment 3 Another embodiment of the data processing device according to the present invention will be described with reference to FIG. FIG. 6 is a functional block diagram showing the configuration of the data processing device according to the third embodiment of the present invention. In FIG. 6, reference numeral 26 denotes a large capacity intelligent disk system, which includes one selection / projection device 20 connected to the system bus 11;
It is composed of 2 to L disk systems 19 connected to the selection / projection device 20. The disk system 19 includes a disk control device 13 and a disk device 14. The disk control device 13 is connected to the selection / projection device 20, and the disk device 14 is connected to the corresponding disk control device 13.

In FIG. 6, the same or corresponding parts as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted. The parts different from FIG. 1 will be described. That is, in the data processing device of the third embodiment, one selection / projection device 20 is connected to the system bus 11, and a plurality of disk control devices 13 are connected to this one selection / projection device 20. Disk controller 1
3 are connected to corresponding disk devices 14. The data processing device of the present embodiment is limited in the number of connections between the system bus 11 and the selection / projection device 20 despite the large capacity of record data for performing the database operation process such as the selection / projection process and the sort process. It is effective when there is.

Next, the operation of the data processing apparatus according to the third embodiment shown in FIG. 6 will be described. When executing selection / projection processing on record data recorded on each of the plurality of disk devices 14 included in the large capacity intelligent disk system 26, the CPU 10 selects parameters necessary for the selection / projection processing. And start. Further, when the CPU 10 executes the sort processing on the record data recorded in each of the plurality of disk devices 14 included in the large capacity intelligent disk system 26, the sorter I / F device corresponding to the parameters necessary for the sort process is executed. Set to 15 and start.

When the selection / projection device 20 performs the selection / projection process, the selection / projection device 20
3, record data to be processed is read from the disk device 14 in which the record data is stored, and a selection / projection process is performed based on predetermined parameters. The predetermined parameters are selected and selected by the CPU 10.
This is a parameter set in the projection device 20.

When the sort processing is performed by the sort processing device 17, the sort processing device 17 transfers the record data selected and projected by the selection / projection device 20 via the sorter I / F device 15 to the system bus. 11 and execute the sorting process. Note that the record data read by the sort processing device 17 may not have been selected and projected by the selection and projection device 20. The record data sorted by the sort processing device 17 is transferred from the sort processing device 17 to the disk control device 13 via the sorter I / F device 15, the system bus 11, and the selection / projection device 20. It is stored in the device 14.

When executing only the selection / projection process on the record data recorded on the disk device 14, the CPU 10 sets parameters necessary for the selection / projection process in the selection / projection device 20, and The device 14 is started. Then, the obtained record data is stored in the disk device 14 from the selection / projection device 20 via the disk control device 13.

By constructing such a data processing device, it is possible to cope with an increase in the volume of record data even if the number of connected selection / projection devices 20 connected to the system bus 11 is limited.

Embodiment 4 FIG. Another embodiment of the data processing device according to the present invention will be described with reference to FIG. FIG. 7 is a functional block diagram showing the configuration of the data processing device according to the fourth embodiment of the present invention. In FIG. 7, the same or corresponding parts as those in the third embodiment shown in FIG. 6 are denoted by the same reference numerals, and description thereof is omitted.

That is, the data processing apparatus according to the fourth embodiment
A number (N) of selection / projection devices 20 within a predetermined range are connected to the system bus 11, and a plurality (M) of disk control devices 13 are connected to each of the selection / projection devices 20. Disk devices 14 corresponding to the respective disk control devices 13 are connected.
In other words, in the data processing apparatus of the present embodiment, a plurality of large capacity intelligent disk systems 26 within a predetermined range are connected to the system bus 11. The number in the predetermined range is a limit on the number of connections of the system bus 11 with the selection / projection device 20.

Next, the operation of the data processing apparatus according to the fourth embodiment shown in FIG. 7 will be described. When the CPU 10 performs the selection / projection processing on the record data recorded on each of the plurality of disk devices 14, the selection / projection apparatus 20 in which the record data to be processed is transferred and stored,
The parameters required for the selection / projection processing are set and activated.

When the CPU 10 performs a sort process on the record data recorded on each of the plurality of disk devices 14, the sorter I / F device 15, to which the record data to be processed is transferred, performs the sort process. Set the required parameters. Then, the CPU 10 executes the sorter I /
The sort processing device 17 to which the record data is transferred from the F device 15 is activated to execute the sort processing.

The data processing apparatus of the present embodiment can select and project a large amount of record data in parallel without using the system bus 11 by using the large capacity intelligent disk system 26. . The sorted record data is transferred from the sort processing device 17 to the disk control device 13 via the sorter I / F device 15, the system bus 11, and each of the selection / projection devices 20, and the corresponding disk device 1
4 is stored.

By constructing such a data processing device, a large amount of record data can be held even when the number of connected selection / projection devices 20 connected to the system bus 11 is limited. In addition, the data processing device of the present embodiment can select and project a large amount of record data without using the system bus 11 by using the large capacity intelligent disk system 26. Can be prevented from occurring, and the throughput of the entire data processing apparatus can be improved.

[0063]

As described above, the data processing apparatus according to the present invention has a disk system unit in which predetermined data is recorded, and a disk system unit connected to the disk system unit and based on instructions from the central processing unit. And a database processing unit for directly reading predetermined data recorded in the storage unit and performing predetermined database processing on the read predetermined data.Only the database processing is performed on the data of the disk system unit. At the time of execution, the database processing can be executed without using the system bus, so that there is no competition of the system bus and the processing efficiency of the database processing can be improved.

Further, the data processing device according to the present invention is connected to a plurality of disk system units on which predetermined data is recorded, and to a plurality of disk system units. A database processing unit for directly reading recorded predetermined data and performing predetermined database processing on the read predetermined data, and executes only database processing on data in the disk system unit In this case, the database processing can be executed without using the system bus, so that the contention of the system bus is eliminated and the processing efficiency of the database processing can be improved.

Further, the data processing apparatus according to the present invention reads the processed data processed by the database processing section via the system bus based on the command from the central processing section, and sorts the processed data. If the sorting process is necessary after the database processing, the database processing unit sends the data to the sort system unit instead of all the data.
A system provided between the database processing unit and the sort system unit, because the number of data after the database processing has been reduced or the data whose data length has become shorter can be transferred from the database processing unit to the sort system unit. The amount of data passing through the bus can be reduced, and the processing efficiency of the sorting process can be increased.

Further, a data processing apparatus according to the present invention is connected to a plurality of disk system units in which predetermined data is recorded, and a plurality of disk system units, respectively.
A plurality of database processing units for directly reading predetermined data recorded in the disk system unit based on an instruction from the central processing unit and performing predetermined database processing on the read predetermined data; When only the database processing is performed on the data in the disk system unit, the database processing can be performed without using the system bus, so that there is no competition of the system bus and the processing efficiency of the database processing is improved. be able to.

Further, the data processing device according to the present invention is connected to a plurality of disk system units in which predetermined data is recorded, and to a plurality of disk system units. A plurality of large-capacity intelligent system units comprising a database processing unit for directly reading recorded predetermined data and performing predetermined database processing on the read predetermined data; On the other hand, when only the database processing is executed, the database processing can be executed without using the system bus, so that the contention of the system bus is eliminated and the processing efficiency of the database processing can be improved.

Further, the data processing apparatus according to the present invention reads processing data processed by each database processing section via a system bus based on an instruction from the central processing section, and sorts the processed data into a sort processing. If sort processing is required after database processing, the database processing unit will not have all data in the sort system unit, but the number of data after database processing will be small, Since the shortened data may be transferred from the database processing unit to the sorting system unit, the amount of data passing through a system bus provided between the database processing unit and the sorting system unit can be reduced.
The processing efficiency of the sorting process can be improved.

[Brief description of the drawings]

FIG. 1 is a functional block diagram illustrating a configuration of a data processing device according to a first embodiment of the present invention.

FIG. 2 is a functional block diagram illustrating a configuration of a selection / projection device 20 included in the data processing device according to the first embodiment of the present invention.

FIG. 3 is a flowchart illustrating an operation of the data processing device according to the first embodiment of the present invention.

FIG. 4 is a conceptual diagram illustrating concepts of a selection process and a projection process in the data processing device according to the first embodiment of the present invention.

FIG. 5 is a functional block diagram illustrating a configuration of a data processing device according to a second embodiment of the present invention.

FIG. 6 is a functional block diagram illustrating a configuration of a data processing device according to a third embodiment of the present invention.

FIG. 7 is a functional block diagram illustrating a configuration of a data processing device according to a fourth embodiment of the present invention.

FIG. 8 is a functional block diagram showing a configuration of a conventional data processing device.

[Explanation of symbols]

Reference Signs List 10 central processing unit, 11 system bus, 12 main memory, 13 disk control device, 14 disk device, 15 sorter interface device, 16 database operation device, 17 sort processing device, 18 host device, 19 disk system, 20 selection / projection device ,
21 intelligent disk system, 22 memory, 23 selection / projection control device, 24 microprocessor unit, 25 memory, 26 large capacity intelligent disk system.

Claims (10)

[Claims] 1. A disk system unit on which predetermined data is recorded; and a disk system unit connected to the disk system unit, which directly reads the predetermined data recorded on the disk system unit based on an instruction from a central processing unit. A data processing unit for performing predetermined database processing on the read predetermined data. 2. A plurality of disk system units on which predetermined data is recorded, and said predetermined data connected to said plurality of disk system units and recorded on said disk system unit based on an instruction from a central processing unit. And a database processing unit for directly performing a predetermined database process on the read predetermined data. 3. Based on an instruction from a central processing unit, processing data that has been subjected to database processing by a database processing unit is read via a system bus.
The data processing device according to claim 1, further comprising a sort system unit that performs a sort process. 4. A plurality of disk system units on which predetermined data is recorded, and each of the plurality of disk system units is connected to the plurality of disk system units, and based on an instruction from a central processing unit, the predetermined disk system unit records the predetermined data. A data processing apparatus comprising: a plurality of database processing units that directly read data and perform predetermined database processing on the read predetermined data. 5. A plurality of disk system units on which predetermined data is recorded, and said predetermined data recorded on said disk system unit based on an instruction from a central processing unit connected to said plurality of disk system units. A plurality of large-capacity intelligent system units comprising: a database processing unit configured to directly read data and perform predetermined database processing on the read predetermined data. 6. A sorting system unit which reads processing data processed by each database processing unit via a system bus based on an instruction from a central processing unit and performs a sorting process on the processing data. The data processing device according to claim 4 or 5, wherein: 7. The data processing apparatus according to claim 1, wherein the database processing includes a selection processing. 8. The data processing apparatus according to claim 1, wherein the database processing includes a projection processing. 9. A disk system unit comprising: a disk unit;
9. The data processing apparatus according to claim 1, comprising a disk control unit connected to the disk unit and a database processing unit. 10. The sort system according to claim 1, wherein the sort system comprises a sort processor and a sorter interface connected to the sort processor and a system bus. Data processing device.