Compare Database Changes

Database Management Reference Manual

Comparisons Across Sessions and Stamps : Compare Database Changes

Compare Database States at Different Times

You can compare details of your current database settings with the corresponding settings at a specified earlier time and generate a report listing all differences. The types of change reported include:

•

Creation and deletion of elements.

•

Changes to the attribute settings of elements.

•

Changes in the list order for BRANCH, POGON, DRAWI and BOUND elements.

Keywords:

DIFFERENCE SINCE

Description:

Lets you report all changes to one or more specified database elements since an earlier version of that database. The output is in the form of a report listing all elements and attributes which have changed, with their old and new values. The report can be sent to a file by using the ALPHA FILE or ALPHA LOG commands.

Note:

The database states are compared between SAVEWORK operations. For example, if you last saved your design changes at 9:30 and ask for a comparison since 10:00, the current settings will be compared with those at 9:30.


Examples:
DIFFERENCE ALL BRANCH FOR /ATEST SINCE 21 JANUARY
DIFF CE SINCE 10:00	Assumes current day.
DIFF /ZONE	Compares current settings with those at your last SAVEWORK command.
DIFF SITE SINCE SESSION 66	Compares current settings with those at the end of session 66 of the current database.

Command Syntax:

>- DIFFerence <selele> SINCE -+- <date/time> -+-----------------------.
                              |               |                       |
                              |- LATEST ------|                       | 
                              |               |                       |
                              |--SESSION nn --|                       |
                              |               |                       |
                              ‘---------------+- EXTRACT -+- extname -|
                                                          |           |
                                                          ‘- extno ---+->