Learn the formal, procedural query language of relational algebra and the non-procedural language of relational calculus, which form the theoretical basis for SQL.
Filter rows from a relation based on a selection condition.
Select a subset of columns from a relation.
Combine the tuples of two relations.
Combine related tuples from two different relations.
Find tuples that are in one relation but not in another.
A brief overview of the non-procedural relational calculus.