A(n) …………… in a table represents a logical relationship among a set of values.

1. Attribute
2. Key
3. Tuple
4. Entry

The term …………… is used to refer to a record in a table.

1. Attribute
2. Tuple
3. Field
4. Instance

A …………… is a property of the entire relation, which ensures through its value that each tuple is unique in a relation.

1. Rows
2. Key
3. Attribute
4. Fields

Which of the following attributes cannot be considered as a choice for primary key ?

1. Id
2. License number
3. Dept_id
4. Street