CS 325 - Week 1 Lecture 2 - 2016-08-25

*   sqlplus can be thought of as a shell for
    the Oracle database management system (DBMS)

*   when it is running, you have a prompt:

SQL> 

    ...and you can type 3 kinds of commands at
    this prompt:

    *   SQL statements
    *   SQL*Plus commands
    *   PL/SQL statements

    *   you can also build files of SQL, SQL*Plus,
        and PL/SQL, and run the resulting SQL scripts
        from within SQL*Plus