Below explained are the differences between SQL and PL/SQL:
SQL refers to Structured Query Language, is a data-oriented language while PL/SQL or Procedural Language Extension is a application- oriented language.
SQL language is primarily used for creation, retrieval and maintaining the relational database while PL/SQL is primarily used for providing SQL with the procedural capabilities.
SQL can be embedded inside PL/SQL block while PL/SQL cannot be embedded in SQL code.
SQL is responsible to work with the database server directly whereas PL/SQL does not establish any interaction with the database server.
SQL is capable of handling or executing single operation at a time while PL/SQL allows you to execute multiple operations at once.