JPH04644A - Data access processing system - Google Patents

Abstract

PURPOSE:To use an appropriate file name which can be selected at every terminal equipment so that a file of a host computer can be designated by providing a file name managing part on the terminal equipment, and holding the information for showing the correspondence of a terminal file name and a host file in a file name table. CONSTITUTION:A terminal equipment 10 has a file name managing part 11, and the file name managing part 11 holds information for showing the correspondence of a terminal file name and a host file in a file name table 12. The same terminal file name as the file name designated by a data access request is retrieved on the file name table 12, and when the terminal file name concerned exists, the host file name of its term and the contents of a processing classification field are fetched, and stored together with the terminal file mane. Subsequently, the designation of the file name is replaced with the host file name corresponding to the terminal file name, and a request is transferred to a host computer 2. In such a way, by using an appropriate file name which can be selected at every terminal equipment 10, a file 3 of the host computer 2 can be designated.

Description

[Detailed Description of the Invention] [Summary] Regarding processing for accessing data on a host computer from a terminal device, a file on the host computer can be specified using an appropriate file name that can be selected for each terminal device. A terminal device that connects to a host computer for the purpose of data access processing, and has a file name management section, and the file name management section stores information indicating correspondence between terminal file names and host files in a file name table. , and when a predetermined data access request is made, the file name table is searched, and if the terminal file name that matches the file name specified in the request is found, the file name is specified. is replaced with the host file name corresponding to the terminal file name, and the request is transferred to the host computer.

[Industrial application field]

The present invention relates to a processing method for accessing data of a host computer from a terminal device.

[Conventional technology]

FIG. 3 is a block diagram showing an example of the configuration of a computer system. A terminal device 1 such as a workstation is connected to a host computer 2 and is configured so that required data in a file 3 stored in the host computer 2 can be accessed from the terminal device 1 .

For this purpose, the terminal device 1 is provided with an input/output processing section 4 and a cooperation processing section 5, and the user inputs a data access request to refer to the required file 3 of the host computer using an input device 6 such as a mouse or keys. Then, the input/output processing section 4 receives this and passes it to the cooperation processing section 5 in order to request it from the host computer 2.

The cooperation processing unit 5 sends this request to the host computer 2, and the host computer 2 waits for data from the host computer 2. When the cooperation processing unit 7 receives the data access request, it specifies the data access request in the request. Select one of the files 3 according to the given file name, and from the file 3,
The data is read and transmitted to the terminal device 1.

When the cooperation processing unit 5 of the terminal device 1 receives data sent from the host computer, it notifies the input/output processing unit 4, so the input/output processing unit 4 receives the data from the cooperation processing unit 5, and processes the data to the required length. The images are displayed one by one on a display device 8 such as a display.

Further, when the user of the terminal device 1 inputs a data access request to update a required file 3 of the host computer using, for example, data displayed on the screen of the display device 8, the input/output processing unit 4 Similarly to the above, the cooperation processing unit 5
The request and data are sent to the host computer 2 via
The cooperation processing unit 7 updates the designated file 3.

[Problem to be solved by the invention]

As described above, the user of the terminal device 1 can use the data in the host computer 2, but as is clear from the above, the user of the terminal device 1 can use the data stored in the host computer 2 to manage the file 3. must be specified in the data access request.

However, in general, each terminal device often has files that are managed independently, and having to handle the identification names of files that are managed individually on the terminal and the host makes operations complicated and prone to operational errors. do.

The object of the present invention is to provide a data access processing method that allows a file on a host computer to be specified using an appropriate file name that can be selected for each terminal device.

[Means to solve the problem]

FIG. 1 is a block diagram showing the configuration of the present invention.

The figure shows the configuration of a data access processing method, and is a terminal bag W10 connected to a host computer 2, which has a file name management section 11. The file name management section 11 stores terminal file names in a file name table 12. If information indicating correspondence with a host file is held and a predetermined data access request is made, the file name table 12 is searched and the terminal file name matching the file name specified in the request is detected. In this case, the request is transferred to the host computer 2 by replacing the specification of the file name with the host file name corresponding to the terminal file name. Also, in this data access processing method, file name table 1
2 holds processing type information indicating whether updating is possible or not for each terminal file name, and the file name management unit 11 stores processing type information for each terminal file name, and when the file name management unit 11 searches the file name table 12 using the file name specified in the data access request, , identifies the processing type corresponding to the terminal file name, and if the processing type does not have a predetermined value that allows updating, control is performed to suppress processing of the request to update data.

[Operation] With this processing method, the user of a terminal device can access data on the host computer using a file name freely determined for each terminal device (terminal file name); in this case, the file name is The file name (host file name) used in the host computer is automatically converted, so the host computer can process it as before. Furthermore, by associating the terminal file name with the processing purpose of whether or not an update is necessary, it becomes possible to control erroneous file usage on the terminal side and prevent data destruction in the host computer.

〔Example〕

In FIG. 1, an input/output processing section 4 and a cooperation processing section 5 of a terminal device 10 operate in the same manner as in the conventional case, and an input device 6 is used to input data for a user to refer to a desired file 3 of a host computer 2. When an access request is input, the input/output processing unit 4 receives it. The input/output processing section 4 then passes the request to the file name management section 11 according to the present invention.

The file name management unit 11 has a file name table 12, and searches the file name table 12 based on the file name specified in the passed request.

The file name table 12 has, for example, a structure as shown in FIG. The name is registered in each field of the host file, and the name is given to that file on the terminal device 10.
Register one or more file names in each column of terminal file names.

Furthermore, if control based on processing type is required, set a predetermined value (represented by "reference" and "update" in the figure) in the processing type field that indicates whether to perform only reference or update for each terminal file name. put.

As is clear from the example in the figure, multiple terminal file names can be provided for the same host file name. or,
It is of course possible to define different terminal file names for different terminal devices for the same file on the host.

The example in the figure is, for example, file 'X' of Mr. X's schedule data.
Mr.
This assumes an operation in which files can only be referenced with the file names Xyotei J and 'Xkoudou J. Even if Mr. All you have to do is register the required terminal file name.

The file name management unit 11 searches the file name table 12 for a terminal file name that is the same as the file name specified in the data access request, and if there is a corresponding terminal file name, the host file name and processing type of the item are specified. Extract the contents of the field and store them along with the terminal file name.

Next, the file name of the data access request is replaced with the retrieved host file name and passed to the cooperation processing unit 5, so the cooperation processing unit 5 sends this request to the host computer 2, as in the conventional case. Waiting for data from the host computer 2, when the cooperation processing unit 7 of the host computer 2 receives a data access request, it selects one of the files 3 according to the file name specified in the request, and from that file 3, The data is read and transmitted to the terminal device 10.

When the cooperation processing unit 5 of the terminal device 10 receives data sent from the host computer, it notifies the file name management unit 11. Therefore, the file name management unit 11 relays the data from the cooperation processing unit 5 to the input/output processing unit 4 and displays it on the display device 8. At that time, the file name management unit 11 relays the data from the cooperation processing unit 5 to the input/output processing unit 4 and displays it on the display device 8. By instructing the input/output processing section 4 to set the screen area where the data is displayed as a write-inhibited area, even if an attempt is made to update the data by mistake, the operation is prevented.

In addition, when the user of the terminal device 1 inputs a data access request to update a required file 3 of the host computer using, for example, data input and displayed on the screen of the display device 8, input/output processing is performed. The unit 4 passes the request to the file name management unit 11 as described above, so the file name management unit 11 searches the file name table 12 as described above and determines that the processing type of the corresponding terminal file name is "update". Otherwise, the request is rejected and, for example, a message to that effect is displayed via the input/output processing unit 4.

If the file name table is searched using the file name specified in the data access request, and the corresponding terminal file name is not found, the host file name is assumed to have been specified directly as before, and the request is made. By leaving the designated file name unchanged as \ and passing it to the cooperation processing unit 5, it is also possible to provide a terminal-specific file name only for necessary files.

[Effects of the Invention] As is clear from the above description, according to the present invention, when accessing data on a host computer from a terminal device, an appropriate file name that can be selected for each terminal device is used to access the file on the host computer. can be specified, which has a significant industrial effect of improving the operating efficiency of the terminal device user.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of the present invention, FIG. 2 is an explanatory diagram of a file name table of the present invention, and FIG. 3 is a block diagram showing an example of a conventional configuration. In the figure, 1.10 is a terminal device, 2 is a host computer, 3 is a file, 4 is an input/output processing unit, 5.7 is a cooperation processing unit, 6 is an input device, 8 is a display device, 11 is a file name management unit , 7(122) showing the configuration of the present invention Fig. 1 A block diagram showing an example of a conventional configuration Fig. 3 An explanatory diagram of the file name table of the present invention Fig. 2

Claims (1)

[Claims] 1. A terminal device (10) connected to a host computer (2), which has a file name management section (11), and the file name management section (11) stores a file name table ( 12) holds information indicating the correspondence between terminal file names and host files, and when a specified data access request is made, the file name table (12) is searched and the file name and file name specified in the request are stored. If a matching terminal file name is detected, the file name specification is replaced with the host file name corresponding to the terminal file name, and the request is forwarded to the host computer (2). A data access processing method characterized by: 2. The file name table (12) holds processing type information indicating whether update is possible for each terminal file name, and the file name management unit (11) stores the file name specified in the data access request. When the file name table (12) is searched by, the processing type corresponding to the terminal file name is identified, and if the processing type is not a predetermined value that allows updating, the data is updated. 2. The data access processing method according to claim 1, wherein the data access processing method is controlled to inhibit processing of the request.