After completing this course, the student should be able to:
 

	Use MODIFY requests for
	Performing calculations
	Validating transaction values
	Displaying messages
	Logging transactions
	Construct a complex MODIFY request using case logic

Overview
Reviews what was taught in FOCUS: File Maintenance I.  Explains conventions followed in the course.
 

	Review and Course Conventions Main points from FOCUS: File Maintenance I.  Conventions used in the course.
	Course Databases. Description of the databases used in the course.

Computations
Shows how a MODIFY request can perform calculations and validations using the COMPUTE statement and the VALIDATE statement.
 

	The COMPUTE Statement How to use a COMPUTE statement in a MODIFY request to perform computations.
	The VALIDATE Statement How to use a VALIDATE statement in a MODIFY request to validate transaction values.

Messages
Discusses how to write MODIFY requests that use the TYPE and LOG statements.
 

	The TYPE Statement How to use a TYPE statement in a MODIFY request to display messages.
	The LOG Statement How to use a LOG statement in a MODIFY request to log transactions.

Case Logic
Explains how to set up a MODIFY request using case logic.  Examines the three statements that control branching from one case to another.  Designs an application using case logic.
 

	The Case Statement Definition of case logic.  How to set up a MODIFY request using case logic.
	GOTO, PERFORM and IF How to use GOTO, PERFORM and IF statements in a MODIFY request to control branching in case logic.
	An Application How to use case logic in a MODIFY request to build a menu for users.