This tutorial teaches you how to create,
test, and deploy a DB2 SQL stored procedure. Stored procedures can
help improve application performance and reduce database access traffic.
All database access must go across the network, which, in some cases,
can result in poor performance. For each SQL statement, a database
manager application must initiate a separate communication with DB2.
To improve application performance, you can create stored procedures
that run on your database server. A client application can then simply
call the stored procedures to obtain results of the SQL statements
that are contained in the procedure. Because the stored procedure
runs the SQL statement on the server for you, database performance
is improved. In addition, stored procedures can help to centralize
business logic. If you make changes to a stored procedure, the changes
are immediately available to all client applications that use it.
An SQL stored procedure is a stored procedure in which the
source code is part of the CREATE PROCEDURE statement. The part of
the CREATE PROCEDURE statement that contains the code is called the
stored procedure body.
Learning objectives
When
you complete the exercises, you will know how to do the following
tasks:
- Set up the workbench environment for stored procedure development
- Connect to the DB2 SAMPLE database and create a data development
project to work with the database
- Create an SQL stored procedure
- Deploy, debug, and run the stored procedure from the workbench
- Export and deploy the stored procedure from the file system
This tutorial should take approximately 60 minutes to
finish. If you explore other concepts related to this tutorial, it
could take longer to complete.
Skill level
Advanced
Audience
Database developers
System requirements
- You must install and configure the SAMPLE database that is included
with DB2 for Linux, UNIX, and Windows. See the DB2 documentation and
First Steps for more information
- If you want to follow the steps in this tutorial for debugging
a stored procedure, you must have DB2 for Linux, UNIX, and Windows
Version 9.1 or higher.
Prerequisites
In order to complete this
tutorial, you should be familiar with the following concepts:
- Database development
- SQL and SQL stored procedure development