The operation that is used to extract specific attributes from all the tuples of a relation
SELECT
PROJECT
UNION
INTERSECTION
The operation that is used to extract specific tuples from a given relation that satisfy a given condition for a relation
The set of permissible values of the same type for a column is known as
tuples
attributes
domain
None of these
All attribute combinations inside a relation that can serve as primary key are known as
Candidate Key
Alternate Key
Foreign Key
The number of attributes in a relation is called the _____ of a relation.
Degree
Cardinality
Name the data model in which all the tables are linked with each other using a common attribute in the tables.
Relational
Network
Hierarchical
A ____ holds one piece of information about an item or subject in the database.
Attribute
Field
Domain
The _____ data model was developed by E F Codd of IBM in 1970.
The operation that displays all the tuples that exist in both the relations and discards the rest of the tuples
The number of tuples in a relation is called the _____ of a relation.
