JPH02259848A - System for updating master file in distributed system - Google Patents

Abstract

PURPOSE:To reduce a transmission time and line cost and to shorten a repetition processing time by transmitting only updated data and automating repeating work between a host computer and a slave computer. CONSTITUTION:The master updated data 3 sent from the host computer is inspected for the successive number of reception by a master updating means 1 based on a reception management file 2, and a master file 5 is updated by a master updating means 4 based on the master updated data 3 to which reception is already checked. Next, transmitted data are extracted from the master updated data 3 by a distribution data preparing means 6 based on a transmission management file 7, and the successive number of transmission is designated. Then, distribution data 8 are prepared and the file transferring of the distribution data 8 is executed to the slave computer by a file transferring means 9. Thus, since only the updated data are transmitted, the quantity of the data to be transmitted is decreased and the transmission line and line cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to distributed processing technology for computers, and particularly to a method for updating master files in distributed systems.

[Conventional technology]

With the development of information processing technology, systems using computers are becoming more sophisticated, sophisticated, and diversified, and the form of data processing is shifting from centralized processing to distributed processing, and the accompanying computer The need for networking has encouraged the development of distributed processing technology.

Against this background, in order to ensure smooth operation of distributed systems, it is important to transfer and update master files distributed in various locations between systems of the same model or different models.

Conventionally, the method for updating the master file in a distributed system is to transfer all data in the master file from the upper computer to the lower computer, and then replace the master file on the lower computer with the received file. ing.

[Problem to be solved by the invention]

The master update method of the conventional distributed system described above also sends all data that has not been updated in the master file, which causes problems such as a large amount of data to be sent, a long transmission time, and high line costs. There is a point.

Furthermore, since humans are involved in the relay work from the higher-level computer to the lower-level computer, there are problems such as operational errors and complicated management.

[Means to solve the problem]

The configuration of the master file update method in the distributed system of the present invention includes a received data inspection means for inspecting received data from a host computer using a reception management file, and a master file update method using the received master update data or input information from a workstation. It is characterized in that it includes a master update means for updating files, a distribution data creation means for creating distribution data to a lower-level computer, and a file transfer means for transferring the distribution data to the lower-level computer.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram mainly showing the processing flow of an embodiment of the present invention, in which 1 is a received data inspection means, 2 is a reception management file, 3 is master update data, 4 is a master update means, and 5 is a 6 is a master file, 6 is a distribution data creation means, 7 is a transmission management file, 8 is distribution data, 9 is a file transfer means, and 10 is a workstation.

Figure 2 shows the hardware environment in this example.
Computers distributed in various locations are connected by transmission paths, and each computer is shown to have a master file connected to it.

The operation on the intermediate computer in FIG. 2 will be explained based on FIG. 1.

The reception management file 2 is network configuration information.

Based on the reception management file 2, the master update data 3, which has reception serial number information and is sent from the host computer 20, is
The received data checking means 1 performs a received serial number check. The inspection contents are that the transmission serial number of the first piece of received data is equal to the reception serial number +1 of the reception management file, and that there are no omissions in the transmission serial number on the received data. Also, if there is an error, output the error list and send it to the upper computer 2.
A retransmission request is made to 0.

Next, the master file 5 is updated by the master update means 4 based on the master update data 3 whose reception has been checked. It should be noted that the update data is given a master update implementation date for the medium needle $11!30, and if the implementation date is on that day or before that day, the update will be performed in daily processing.

The transmission management file 7 is network configuration information.

It has transmission serial number information and transmission data extraction information, and based on the transmission management file 7, the distribution data creation means 6 extracts the transmission data from the master update data 3, assigns a transmission serial number, and creates the distribution data 8. is created and the distribution data 8 is transferred to the lower-level computer 40 by the file transfer means 9.

In this embodiment, data received from the host computer is used as input to the master update means 4, but it is also possible to input update information from the workstation 10 of the intermediate computer itself.

〔Effect of the invention〕

As explained above, the present invention has the effect of reducing transmission time and line costs by transmitting only update data, and by automating the relay work between the upper computer and the lower computer, fine-grained master management is possible. This has the effect of shortening the relay processing time. Also, by having the network configuration in the management file, it is possible to respond immediately to changes in the network.

[Brief explanation of drawings]

FIG. 1 is a block diagram mainly showing the flow of operation of an embodiment of the present invention, and FIG. 2 is a diagram showing the hardware environment in this embodiment. DESCRIPTION OF SYMBOLS 1...Received data inspection means, 2...Reception management file, 3...Master update data, 4...Master update means, 5...Master file, 6...Distribution data creation means, 7 . . . Transmission management file, 8. Distribution data, 9. File transfer means, 10. Workstation, 0. Upper computer, 0. Middle computer, . . Lower computer.

Claims (1)

[Claims] Received data inspection means for inspecting received data from a higher-level computer using a reception management file, master update means for updating the master file with the received master update data or input information from a workstation, and distribution to lower-level computers. A method for updating a master file in a distributed system, comprising a distribution data creation means for creating data, and a file transfer means for transferring the distribution data to the lower-level computer.