* Unique Constraint >>>> It will not allow the duplicate values and it will allow only one null value. >>>> We can apply this constraint Columns level & Table level >>>> We can add the unique ...
-- All the primary key and foreign key constraints are included in the DDL. Other constraints are as follows: ALTER TABLE SCHEDULES ADD CONSTRAINT isAvailableChk CHECK (isAvailable in (0, 1)); ALTER ...
The term "data integrity" can mean different things to different people, but the most difficult and pervasive problem facing organizations these days is the semantic integrity of the data. As ...
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