Question

name four types of keys in c++​

Answer 1

Answer:

Types of Keys in Relational Model (Candidate, Super, Primary, Alternate and Foreign)

The value of Candidate Key is unique and non-null for every tuple.

There can be more than one candidate key in a relation. ...

The candidate key can be simple (having only one attribute) or composite as well.

Explanation:

Answer 2

Explanation:

Primary Key.

Candidate Key.

Super Key.

Foreign Key.

Composite Key.

Alternate Key.

Unique Key.