in DBMS by
Q:
what is SQL projection?

▼ Show 1 Answer

0 votes
by
the projection of a relation is defined as projection of all its tuples over a

set of attributes.it yields vertical subset of the relation.the projection

operation is used to twicw the number of attributes in the resultant relation

or to reorder attributes.
Learn More with Madanswer

Related questions

0 votes
0 votes
0 votes
asked Feb 28, 2020 in DBMS by rahuljain1
0 votes
...