Answer Posted / kalyana chakravarthy

SQL is structured query language which is used to retrive
data from the database. Before 1974 it is known as Gupta
SQL. In 1974 Relational solutions Inc(Now oracle
corporation) taken it as a native lang to retrive data.
Though it is structured quer language it is un structured
its like simple english language.

Pl/Sql is an extension for Sql. It is a structured 4th
generation language where one can execute more than one
select statement with conditional constructs like if, then
and else.

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