Question: what are the different types of keys in sql?
Answer: Super Key. Super key is a set of one or more than one keys that can be used to identify a record uniquely in a table. ...  Candidate Key. A Candidate Key is a set of one or more fields/columns that can identify a record uniquely in a table. ...  Primary Key. ...  Alternate key. ...  Composite/Compound Key. ...  Unique Key. ...  Foreign Key.