Computer Science
A …………… is a property of the entire relation, which ensures through its value that each tuple is unique in a relation.
- Rows
- Key
- Attribute
- Fields
Related Questions
The term …………… is used to refer to a record in a table.
- Attribute
- Tuple
- Field
- Instance
The term …………… is used to refer to a field in a table.
- Attribute
- Tuple
- Row
- Instance
Which of the following attributes cannot be considered as a choice for primary key ?
- Id
- License number
- Dept_id
- Street
An attribute in a relation is a foreign key if it is the …………… key in any other relation.
- Candidate
- Primary
- Super
- Sub