Data processing network with upgrading of files

• US 5,019,963 A
• Filed: 03/21/1988
• Issued: 05/28/1991
• Est. Priority Date: 04/02/1987
• Status: Expired due to Term

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Mori, Tohru, MacFarlane, Peter R., Alderson, Graham R.
• Primary Examiner(s): Heckler, Thomas M.
• Application Number:
  US07/171,315
• Time in Patent Office: 1,163 Days
• Field of Search: 364/200 MS File, 364/900 MS File
• US Class Current: 1/1
• CPC Class Codes: G06F 16/178 Techniques for file synchronisation in file systems
• CPC Class Codes: G06F 8/65 Updates security arrangements therefor G06F21/57
• CPC Class Codes: Y10S 707/99952 Coherency, e.g. same view to multiple users

Abstract

A data processing network in which a plurality of workstations such as personal computers (PC) (12) are connected to a host processor (11) and contain PC programs at particular levels for controlling tasks on the personal computers. The personal computers send a signal to the host when they are about to conduct a task indicating which data files they have and at what level. The host has an object library containing a copy of each disk file for each version of PC program. The host determines if the personal computer has the latest level data file for the version of program at that personal computer and, if it does not, sends a copy of the latest level data file to the personal computer to replace the down-level data file. Preferably, the host checks if the personal computer has all the data files it needs for the particular task and, if it does not and if it should because of the version of PC program stored at the PC, the host can load a copy of the missing file to the personal computer. The host does not have to contain a record of all the levels of all the programs of all the personal computers connected to it. However, by updating the object library in the host, this arrangement ensures that all personal computers connected to it are automatically brought to the latest authorized level of data files as are required by the personal computer.

Claims

1. In a data processing network having at least one host processor connected to a plurality of workstations of various types containing different facilities installed thereon, the host processor containing a copy of a latest version of each of the facilities, a method of updating the facilities stored in the workstations, said method comprising the steps of:

transmitting a query by the host processor to one or more of said plurality of workstations;

transmitting a signal from each of the plurality of workstations to the host processor in response to the query indicating the type of workstation and facilities installed thereon; and

updating by the host processor all the facilities stored on each of the respective plurality of workstations each having a version which is different from the latest version of the respective facilities stored in the host processor in response to the signal transmitted thereby.

2. The method as recited in claim 1 wherein the facilities are data files installed on each of the workstations.

3. The method as recited in claim 2 further comprising the step of configuring data in the host processor into a form suitable for transmission to a selected one of the plurality of workstations in response to said signal transmitted therefrom.

4. The method as recited in claim 3 wherein the plurality of workstations are personal computers.

5. The method as recited in claim 4 wherein the data files include modules of a personal computer program, and each of the data files further includes a block of code containing information determinative of the version of the program and a level of the data file.

6. The method as recited in claim 5 wherein the block of data file code further contains data at the host processor for identifying the data file and a field containing data displayable at the personal computer.

7. In a data processing network having at least one host processor connected to a plurality of workstations containing data files, the host processor containing a copy of a latest version of each of the data files, a method of updating the data files stored in the workstations, said method comprising the steps of:

transmitting a signal by one of the plurality of workstations to the host processor indicating a plurality of data files to be used for a particular task;

determining by the host processor whether the one workstation includes the latest version of the data files to be used for the particular task; and

updating by the host processor all of the data files in the one workstation having a version which is different from the latest version of the respective data files stored in the host processor.

8. The method as recited in claim 7 further comprising the step of transmitting by the host processor to the one workstation additional data files required for the particular task as part of the updating by the host processor.

9. The method as recited in claim 8 wherein the step of determining includes the step of determining which version of the respective data files is stored at the one workstation.

10. The method as recited in claim 9 wherein the step of updating includes the step of sending a latest level data file to the one workstation.

11. The method as recited in claim 10 wherein the plurality of workstations are personal computers.

12. The method as recited in claim 11, wherein the data files include modules of a personal computer program, and each of the data files further includes a block of code containing information determinative of the version of the program and a level of the data file.

13. The method as recited in claim 12 wherein the block of data file code further contains data at the host processor for identifying the data file and a field containing data displayable at the personal computer.

14. A data processing system for updating data files stored in a plurality of workstations, said system having at least one host processor connected to the plurality of workstations, the host containing a copy of a latest version of each of the data files, comprising:

means for transmitting a signal from one of the plurality of workstations to the host processor indicating a plurality of data files to be used for a particular task;

means in the host processor responsive to the signal for determining whether the one workstation includes the latest version of the data files to be used for the particular task; and

means for updating all of the data files in the one workstation having a version which is different from the latest version of the respective data files stored in the host processor.

15. The system as recited in claim 14 further comprising means for transmitting by the host processor to the one workstation additional data files required for the particular task as a part of the means for updating.

16. The system as recited in claim 15 wherein the means for determining includes means for determining which version of the respective data files is stored at the one workstation.

17. The system as recited in claim 16 wherein the means for updating includes means for sending a latest level data file to the one workstation.

18. The system as recited in claim 17 wherein the plurality of workstations are personal computers.

19. The system as recited in claim 18 wherein the data files include modules of a personal computer program, and each of the data files further includes a block of code containing information determinative of the version of the program and a level of the data file.

20. The system as recited in claim 19 wherein the block of data file code further contains data at the host processor for identifying the data file and a field containing data displayable at the personal computer.