CA IDMS Tuesday Tip by Edward Gorga, Principal Support Engineer for May 21, 2013.
You may have noticed that the Date Last Compiled field for a map displayed in IDD is not always updated when the map is compiled. This is not really a problem.
The Date Last Compiled field is changed only if a critical change is made to the map or an entity owned by the map is modified prior to compiling the map. Once a map is marked as having had a critical change then any program or dialog that uses the map will need to be recompiled. The following are considered critical changes:
[list]
[*]Adding a variable field
[*]Deleting a variable field
[*]Changing a nonpageable map to a pageable map, and vice versa
[*]Changing record versions
[list]
In contrast, the Date Last Updated field is updated each time a map is compiled whether a critical change was made to the map or not.