In Relational Algebra, Extended Operators are those operators that are derived from the basic operators. We already have discussed Basic Operators . Now let us discuss the Extended Operators and how they are beneficial in Relational Algebra.
There are mainly three types of Extended Operators, namely:
many of the prectical language like SQL...etc have more power compare to relational algebra because grouping ,ordering .......etc
are not supported by Relational algebra but many of practical language are support.