JP2848307B2 - Data diversion device and method with data change function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for diverting data with a data change function, and more particularly to a method and apparatus for diverting data.
The present invention relates to a data diversion apparatus and method having a data change function for reflecting a revision of a diversion source on a diversion side even if the diversion source is changed / deleted after the deletion.

[0002]

2. Description of the Related Art Conventionally, when diverting data, it is assumed that the diverted side and the diverted source have the same contents. If a change is made to the diverted side, the contents are not reflected at all on the diverted side, or The original contents are directly reflected on the diverted side, and any changes on the diverted side are lost.

For example, Japanese Patent Application Laid-Open No. 5-346882 discloses a technique for ensuring data consistency between distributed computers. However, the diversion source and the diversion side have the same contents, and the diversion source and the diversion side have different contents. Can not be.

[0004]

In the above-mentioned conventional data diversion system, when a modification is made on the diversion side, it is difficult to reflect the revision of the diversion source on the diversion side and operate it as it is.

The reason is that there is no means for reflecting the revision of the diversion source on the diversion side.

[0006]

According to the present invention, there is provided a data diverting apparatus and method having a data change function, which comprises: a difference creating means for creating a change difference at a diversion source of diversion source data; Means for creating a difference to be created, means for creating a change priority record for deciding whether or not to make the change of the data on the diversion source / diversion side valid, and a diversion source from the two differences and the change priority record described above. And entity creation means for selecting any of the changes on the diversion side and recreating the diverted entity data reflecting the change.

[Operation] Based on the change priority record, the entity creating means creates diverted entity data from the diverted side data, the diverted side change difference, and the diverted source change difference. For this reason, even if the diversion source is changed / deleted after the diversion-side change / deletion, the revision of the diversion source can be reflected on the diversion side.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of an apparatus and method for diverting data with a data change function according to the present invention.

Prior to diversion, the minimum unit of change / deletion (hereinafter, “item”) is determined on the diversion source / diversion side. This is used when creating a difference. The diverted original data 1 is diverted as the diverted data 2. That is, the diversion source data 1 and the diversion-side data 2 have the same content. At this time, the change priority record creation means 11 creates the change priority record 8 indicating the priority for all the items. At this time, in principle, it is assumed that all items of the diversion source data 1 have priority. At the diversion source, the difference creating means 5 creates a difference 6 for the change of the diversion source data 1. Similarly, for a change to the diversion-side data 2, the difference creating means 3 creates the difference 4, but when giving priority to this change, the change-priority record creating means 11 gives priority to the corresponding item. Record in 8. The diverted entity 10 can be expressed in the form of diverted source data 1 + difference 6 (means for creating the diverted entity data 9 is outside the scope of the present invention, and is omitted from FIG. 1). The entity creation means 7 uses the diversion-side data 2 and the difference 4
And the difference 6. When there is a change / deletion in the same item on the diversion side and the diversion source, the priority is made valid by the change priority record 8 and the diversion actual data 9 is created.
That is, the diversion-side data 2 is created again.

[Table]

First, if there is no change in the diversion source / diversion side in the state 1 shown in the table, there is no change in the diversion source item in FIG.
As shown in the block diagram in the case where there is no change in the diversion-side item, there is substantially no difference.
Is created. The diverted entity data A91 is created by the entity creating means 7 based on the diverted data 2 and the difference 4, but the contents of the diverted data 2 and the diverted entity data A91 are the same.

There is no change in the diversion source item in FIG.
As shown in the block diagram when there is a change in the diversion-side item, the diversion-source data item 111 of the diversion-source data 1 is not changed, and the corresponding diversion-side data item 211 of the diversion-side data 2 is changed. In this case, the difference 4 is created by the difference creating means 3. The item 211 of the diverted data is not directly changed. At this time, the item 211 of the diversion-side data
The priority of the item 211 of the diversion-side data in the change priority record 8 is raised or lowered by the change priority record creation means 11. Based on the change priority record 8, when the priority of the item 211 of the diversion-side data is higher than the item 111 of the diversion source data (priority:
For P> 0), the difference 4 is prioritized, and the diverted entity data A91
As shown in (2), the change to the diversion-side data item 211 is reflected in the diversion-side entity data item 911. When the priority of the item 211 of the diversion-side data is lower than the item 111 of the diversion-source data (priority: P <0), the change to the item 211 of the diversion-side data is performed as shown in the diversion entity data B92. It is not reflected in the data item 921.

There is no change in the diversion source item in FIG.
As shown in the block diagram in the case where the diversion-side item is deleted, the diversion-source data item 111 of the diversion-source data 1 is not changed, and the corresponding diversion-side data item 211 of the diversion-side data 2 is deleted. In this case, the difference 4 is created by the difference creating means 3. The diversion-side data item 211 is not directly changed. At this time, it is determined whether to give priority to the deletion of the item 211 of the diversion-side data, and whether the priority of the item 211 of the diversion-side data in the change-priority record 8 is increased or reduced by the change-priority record creation unit 11. I do. Based on the change priority record 8, when the priority of the item 211 of the diversion-side data is higher than the diversion source data item 111 (priority: P>
In (0), the lower part 4 is prioritized, and the deletion of the diversion-side data to the item 211 is reflected in the diversion-side actual data item 911 as shown in the diversion actual data A91. If the priority of the diversion-side data item 211 is lower than the diversion source data item 111 (priority: P <0), the deletion to the diversion-side data item 211 is not performed as shown in the diversion entity data B92. It is not reflected in the data item 921.

There is a change in the diversion source item in FIG.
When there is no change in the diversion source data item 111 of the diversion source data 1 and the corresponding diversion side data item 211 of the diversion source data 2 as shown in the block diagram when there is no change in the diversion side item Is created by the difference creating means 5. The item 1111 of the diversion source data is not directly changed. If the diversion-side data item 211 is higher than the diversion-side data item 211 (priority: P> 0) based on the change priority record 8, the difference 6 has priority, and the change to the diversion source data item 111 as shown in the diversion actual data A91 is not performed. This is reflected in the item 911 of the diverted entity data. When the priority of the item 111 of the diversion source data is lower than the item 211 of the diversion-side data (priority: P <0), as shown in the diversion entity data B92, the change to the diversion source data item 111 is performed on the diversion-side entity. It is not reflected in the data item 921.

There is a change in the diversion source item in FIG.
As shown in the block diagram in the case where there is a change also in the diversion-side item, the change occurs in the diversion-source data item 111 of the diversion-source data 1 and the corresponding diversion-side data item 211 of the diversion-side data 2 also changes. If this occurs, first, the difference 6 is created by the difference creating means 5. The item 111 of the diversion source data is not directly changed. Next, the difference creation means 3
Thus, the difference 4 is created. Diversion-side data item 211
Is not directly changed. At this time, the item 21 of the diversion-side data
It is determined whether or not the change 1 is prioritized, and the change priority record creation means 11 raises or lowers the priority of the item 211 of the diversion-side data in the change priority record 8.
If the priority of the item 211 of the diversion-side data is higher than the item 111 of the diversion-source data based on the change priority record 8 (priority: P> 0), the difference 4 has priority and the diversion entity data A
As shown at 91, the change to the diversion-side data item 211 is reflected in the diversion-side entity data item 911. The priority of the diversion-side data item 211 is the diversion-source data item 111
If lower (priority: P <0), divert entity data B
As shown in 92, the change to the item 111 of the diversion source data is reflected in the item 921 of the diversion-side entity data.

There is a change in the diversion source item in FIG.
As shown in the block diagram in the case where there is a deletion in the diversion-side item, a change has occurred in the diversion-source data item 111 of the diversion-source data 1 and a corresponding deletion has occurred in the diversion-side data item 211 of the diversion-side data 2. In this case, first, the difference 6 is created by the difference creating unit 5. The item 111 of the diversion source data is not directly changed. Next, a difference 4 is created by the difference creating means 3. The item 211 of the diverted data is not directly changed. At this time, the item 211 of the diversion-side data
The priority of the item 211 of the diversion-side data in the change priority record 8 is raised or lowered by the change priority record creation means 11. Based on the change priority record 8, when the priority of the item 211 of the diversion-side data is higher than the item 111 of the diversion source data (priority:
For P> 0), the difference 4 is prioritized, and the diverted entity data A91
As shown in (1), the change to the diversion-side data item 211 is reflected in the diversion-side entity data item 911. If the priority of the diversion-side data item 211 is lower than the diversion-source data item 111 (priority: P <0), as shown in the diversion-substance data B92, the deletion to the diversion-source data item 111 is performed on the diversion-side entity. This is reflected in the data item 921.

There is a deletion in the diversion source item in FIG.
As shown in the block diagram when there is no change in the diversion-side item, when the diversion-source data item 111 of the diversion-source data 1 is deleted and the corresponding diversion-side data item 211 of the diversion-side data 2 does not change Is created by the difference creating means 5. The item 111 of the diversion source data is not directly changed. If the diversion-side data is higher than the diversion-side data item 211 based on the change priority record 8 (priority: P> 0), the difference 6 has priority, and as shown in the diversion actual data A91, the diversion source data is deleted from the item 111. Is reflected in the diversion-side entity data item 911. When the priority of the item 211 of the diversion source data is lower than the item 211 of the diversion-side data (priority:
(P <0), as shown in the diverted entity data B92, the deletion of the diverted source data to the item 211 is not reflected in the diverted entity data item 921.

There is a deletion in the diversion source item in FIG.
As shown in the block diagram when there is a change in the diversion-side item, the diversion-source data item 111 of the diversion-source data 1 is deleted, and the corresponding diversion-side data item 211 of the diversion-side data 2 is changed. In this case, first, the difference 6 is created by the difference creating unit 5. The item 111 of the diversion source data is not directly changed. Next, a difference 4 is created by the difference creating means 3. The item 211 of the diverted data is not directly changed. At this time, the item 211 of the diversion-side data
The priority of the item 211 of the diversion-side data in the change priority record 8 is raised or lowered by the change priority record creation means 11. Based on the change priority record 8, when the priority of the item 211 of the diversion-side data is higher than the item 111 of the diversion source data (priority:
For P> 0), the difference 4 is prioritized, and the diverted entity data A91
As shown in (2), the change to the diversion-side data item 211 is reflected in the diversion-side entity data item 911. If the priority of the item 211 of the diversion-side data is lower than the item 111 of the diversion source data (priority: P <0), the diversion entity data B92
As shown in (1), the deletion of the diversion source data into the item 111 is reflected in the diversion-side entity data item 921.

As shown in the block diagram in the case where the diversion source item in FIG. 10 in the state 9 is deleted and the diversion-side item is also deleted, the deletion occurs in the diversion source data item 111 of the diversion source data 1 as shown in FIG. When a deletion has occurred in the item 211 of the corresponding diversion-side data 2 of the diversion-side data 2, first, the difference 6 is created by the difference creating unit 5. The item 111 of the diversion source data is not directly changed. Next, a difference 4 is created by the difference creating means 3. The item 211 of the diverted data is not directly changed. At this time, the result is the same regardless of which deletion is prioritized.
It is determined whether or not to prioritize the deletion of 11, and the change priority record creation unit 11 raises or lowers the priority of the item 211 of the diversion-side data in the change priority record 8. Based on the change priority record 8, the diversion-side data item 211
Is higher than the diversion source data item 111 (priority: P> 0), the difference 4 has priority, and as shown in the diversion entity data A91, the deletion to the diversion-side data item 211 is performed on the diversion-side entity. This is reflected in the data item 911. The priority of the diversion-side data item 211 is the diversion source data item 11
If it is lower than 1 (priority: P <0), the deletion of the item 111 of the diversion base data is reflected on the item 921 of the diversion-side actual data as shown in the diversion entity data B92.

[0021]

As described above, according to the test management method of the present invention, the difference creating means for creating the change difference at the diversion source of the diversion source data and the difference creation means for creating the change difference at the diversion side of the diversion data Means for creating a change priority record for determining whether or not the change of the data on the diversion source / diversion side is to be validated; and the diversion data reflecting the change from the two differences and the change priority record. Since there is provided an entity creating means for creating, when a modification is made on the diversion side, the revision of the diversion source can be reflected on the diversion side.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a data diversion device with a data change function and a method according to the present invention.

FIG. 2 is a block diagram showing a case of a data diversion state 1;

FIG. 3 is a block diagram showing a case of a data diversion state 2;

FIG. 4 is a block diagram showing a case of a state 3 for data diversion.

FIG. 5 is a block diagram showing a case of data diversion state 4;

FIG. 6 is a block diagram showing a case of a data diversion state 5;

FIG. 7 is a block diagram showing a case of a state 6 for data diversion.

FIG. 8 is a block diagram showing a case of a data diversion state 7;

FIG. 9 is a block diagram showing a case of data diversion state 8;

FIG. 10 is a block diagram showing a case of a state 9 for data diversion.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 diversion source data 2 diversion side data 3,5 difference creation means 4,6 difference 7 entity creation means 8 change priority record 9 diversion entity data 10 diversion source entity 11 change priority record creation means 91 diversion entity data A 92 diversion entity data B 111 Items of diversion source data 211 Items of diversion-side data 911, 921 Items of diversion-side actual data

Claims (2)

(57) [Claims] 1. A difference creating means for creating a change difference at a diversion source of diversion source data, a difference creating means for creating a change difference at a diversion side of diversion-side data, and enabling a change of diversion source / diversion-side data Means for creating a change priority record for determining whether or not to make the change, and selecting either the diversion source / diversion side change from the two differences and the change priority record, and divert entity data reflecting the change And a substance creating means for re-creating the data. 2. A change difference at the diversion source of the diversion source data is created, a change difference at the diversion side of the diversion source data is created, and it is determined whether or not the change of the diversion source / diversion side data is made valid. Data for creating a change priority record for making a change, selecting either the diversion source / diversion side change from the two differences and the change priority record, and recreating the diversion entity data reflecting the change. Data diversion method with change function.