what is primary key,unique key, foreign key? can u teach me
in simple language?
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Answer Posted / siya
Primary Key:- The primary key is the key which is uniquely
identifing in a table which not take null value for that
particular field and we don't take dublicate value for that
key.
Foreign Key:- Foregin Key is a key which define the primary
key into another table or any particular field of primary
key.
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