Database Migrating Testing verifies the following
1) Visibility of all business data in respective fields in migrated system
2) History data links to other system
3) Status of various business entities in migrated system.
e.g. a. Task which have completed status should be displayed completed in migrated system
b. Review history of any documents
c. Previous transaction data for business entities
d. Meeting and conference records in migrated system
4) Future dates sets for some specific fields should be displayed in same way in migrated system
5) User Accounts and Groups data in migrated system
In Data migration testing is done to ensure that the current system is successfully migrated or displayed once the database is changed.