In PL/SQL method with count(*) is unsafe.

The `SET DEFINE` command changes the prefix character used to mark substitution variables.

The %TYPE attribute lets use the datatype of a field, record, nested table, database column, or variable in your own declarations, rather than hardcoding the type names.

As discussed earlier, there are two types of cursors: Implicit cursors and explicit cursors. In this section, we will focus on explicit cursors and their functionality...

Oracle creates a memory area, known as the context area for processing an SQL statements, which contain all the informations needed for procesing the SQL statements...

For testing and learning Oracle Database we can start with Oracle Database Express Edition (XE)...