PL/SQL block structure
Declaration of memory various used later.
SQL executable statements for manipulating table data.
SQL and or PL/SQL code to handle errors that may crop us during the execution of the above
A sequence of statements can be executed based on some condition using IP.
Syntax: who am i
The date command is used to print the system date and time.
Syntax: if <condn> then <action>
A sequence of statements can be executed any number of times using the loop