What kind of integrity does a database have when all its rows have a unique identifier called a primary key?Select one:user-defined integrityentity integritydomain integrityreferential integrity
Question
What kind of integrity does a database have when all its rows have a unique identifier called a primary key?Select one:user-defined integrityentity integritydomain integrityreferential integrity
Solution
A database has entity integrity when all its rows have a unique identifier called a primary key. Entity integrity ensures that each row in a table is uniquely identifiable and that no part of the primary key can be null. This helps to prevent duplicate records and ensures that each record can be uniquely identified and accessed.
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