PL/SQL User's Guide and Reference
CHAPTER 9. Execution Environments
Three things are to be looked to in a building: that it stand on the right spot; that it be securely founded; that it be successfully executed.
Goethe
You can use PL/SQL with a variety of application development tools. This chapter shows you how to use PL/SQL in the SQL*Plus, Oracle Precompiler, and OCI environments.