Question

projection operation in relation algebra used for.
​

Answer 1

Answer:

Relational algebra mainly provides theoretical foundation for relational databases and SQL. Projection is used to project required column data from a relation.

Note: By Default projection removes duplicate data. Selection is used to select required tuples of the relations.

Answer 2

ANSWER

Relational algebra mainly provides theoretical foundation for relational databases and SQL. Projection is used to project required column data from a relation. Note: By Default projection removes duplicate data. Selection is used to select required tuples of the relations.

Hope it helps

MARK AS BRAINLIEST

FOLLOW ME~