Answer / Nikesh Gupta

Database Integrity in SAP ABAP refers to ensuring consistency and accuracy of data. The following are some of the types of database integrity:
1. Domain Check: This checks whether the entered value is valid within a predefined range or set of values.
2. Table Check (CHECK): This ensures that no duplicate records are inserted into the table.
3. Not Null Check: This ensures that a field cannot contain NULL values unless explicitly allowed.
4. Primary Key Check: This ensures uniqueness and non-duplication of data for the primary key fields in the table.
5. Foreign Key Check: This ensures referential integrity by ensuring that related records in different tables match.

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