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DB2

Posted Aug 15, 2006

How to Build an ASP.NET Web Site Using DB2 Data with Visual Studio 2005

By Paul Zikopoulos

In a previous series of articles, I showed you all the great integration features between the IBM DB2 Universal Database for Linux, UNIX, and Windows Version 8.x (DB2 UDB) product and the Microsoft Visual Studio.NET 2003 integrated development environment (IDE).

In early June 2006, IBM announced the next release of the DB2 UDB product, DB2 9 (formerly known as DB2 Viper). Part of this announcement includes the support for Microsoft Visual Studio 2005 and its accompanying ADO.NET 2.0 driver.

As you may recall, Microsoft announced the Visual Studio 2005 product late in 2005, along with SQL Server 2005. Around the same time, the DB2 team delivered a beta of the now officially announced integration into Microsoft Visual Studio 2005 and ADO.NET 2.0.

In another article, I showed you how to quickly build a Windows Application that bound various controls (ComboBoxes, DataGrids) using the new Visual Studio 2005 support announced for DB2 9.

In this article, I want to show you how easy it is to be a .NET developer and work with DB2 UDB V8 or DB2 9 databases when building a .NET-based Active Server Pages (ASP.NET) Web site that's backed by a DB2 data store. Specifically, I will show you how to quickly create a Web page with Visual Studio 2005 using a DB2 UDB V8 database with this new tooling. (Of course, I could have easily used a DB2 9 database as well – the point here is to show off the integration of DB2 into the Visual Studio 2005 IDE.)

Note: Before you can create an ASP.NET-based Web site to which you will bind your DB2 data, a connection to that database must be defined in the Server Explorer. If you already have a database connection, continue with the steps outlined in this article. If you don't have a database connection, refer to the “Addendum: Adding a DB2 Data Source” section at the end of this article.

On Your Marks, Get Set....Just Before You Go

In order to follow along with all of the steps outlined in this article, ensure that your environment has the DB2 SAMPLE database. The examples in this article use this database (available to both DB2 UDB V8 and DB2 9 users). If it does not already exist, you can create this database quickly by entering the db2sampl command in a Windows command prompt.

Note that the SAMPLE database in DB2 UDB V8 doesn't come with any referential integrity (RI) constraints so ...? (The SAMPLE database in DB2 9 has been enhanced with RI constraints as well as a host of other objects like MDC and MQT tables, and more.)

Visual Studio 2005 will give you some added capabilities when generating an ASP.NET Web page when it can identify the primary key on a table. To demonstrate the rich features that Visual Studio 2005 provides for DB2 Web-based development, add a primary key (which is an online operation in a DB2 environment) to the EMPLOYEE table by performing the following steps:

1.  Ensure that the DB2 instance where the SAMPLE database resides has been started by entering the db2start command at a Windows command prompt.

2.  Start the Control Center by entering the db2cc command at a Windows command prompt.

3.  Expand the Control Center folders until you locate the Employee table in the Sample database, right-click this table, and select Alter. The Alter Table notebook opens.

4.  Select the Keys tab and click Add Primary. The Define Primary Key window opens, as shown below:

5.  Change the name of the primary key by typing EMPNO_PK in the Primary key name field.

6.  Select the EMPNO column in the Available columns box, click the > button to move it to the Selected columns box, and then click OK.

7.  You are returned to the Define Primary Key window. Click OK.



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