Keys in DBMS | DBMS Tutorial in Hindi | Types of Keys|

A key in DBMS is an attribute or set of attribute which is used to uniquely identify a couple in a table.
Types of Keys
Super key
Candidate key
Primary key
Alternate key
Unique Key
Foreign Key
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1:09 introduction
3:54 primary key
5:50 super key
13:15 candidate key
19:17 again primary key
22:27 alternate key
22:47 composition key
23:14 foreign key
24:57 unique key

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19:00

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No. of super key: (2^n)-(2^n-1)

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Itna bada intro🤦🏻‍♂️