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DATABASE ADMINISTRATOR AND ITS ROLES
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Use of Transaction in DBMS
A transaction is any unit of work done against the database.A transaction can be used to save the changes made to the database, it can be used to rollback the database to any save point.
For example say if you are creating or updating a record...
Referential Integrity
Referential Integrity
Referential Integrity is a concept in which the tables shares a relationship between them and that should be consistent.
Ex:
If we have a table called Employee and the other Employee Salary and columns in them of na...
