Which of the following will help to maintain unique record in the table?
(1 Point)
Foreign Key
Primary Key
Composite Key
Alternate Key
Answers
Primary Key will help to maintain the unique record in the table.
Extra Information
A key is an attribute that helps us in identifying rows of a table.
There are many types of keys such as
1. Super Key
2. Primary Key
3. Candidate Key
4. Alternate Key
5. Foreign Key
6. Compound Key
7. Composite Key
8. Surrogate Key
Foreign Key
Foreign Key is used to create a link between two tables of the database. Foreign Key is also called referencing key because it refers to the primary key of the other table.
Primary Key
Primary Key helps us in identifying unique rows of a table.
Composite Key
Composite Key helps us in combining two or more columns of the table that helps us in identifying unique rows of the table.
Alternate Key
Alternate Key is the key that helps us in identifying unique rows of a table but, is not chosen as Primary Key.
Primary Key will help to maintain the unique record in the table.
Primary Key :
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