MS Access for the Business Environment: Extend Access with Pass-Through Queries - Page 3
May 3, 2004
Practice: Establish MS Access as a Front End to MSSQL Server 2000
We will be establishing the Pubs sample database, which is installed with MSSQL Server 2000 as a part of a typical installation, as the back end for the present exercise. To do so, we need to specify the target database particulars and create a connection between MS Access and SQL Server.
Let's start MS Access and proceed with the preparation for building a Pass-Through query to MSSQL Server 2000, specifically with the establishment of a data connection to the targeted Pubs database, taking the following steps:
1. Go to the Start button on the PC, and then navigate to the Microsoft Office Access icon, as we did in the first lesson of this series, Create a Calculated Field with the Expression Builder.
2. Click the icon to start MS Access.
MS Access opens, and may display the initial dialog. If so, close it.
3. Select File -> New from the top menu.
4. Select Blank Database... from the options that are available.
The selection can be made from the Task Pane in MS Access 2003, as shown in Illustration 2, among other ways. Depending upon your version of Access, this may differ.
The File New Database dialog appears. Here we give the new database a name and designate where we wish to place it.
5. Type SQL_Server_Front_End into the File Name box of the dialog, after navigating to a place to put the database.
The File New Database dialog appears as depicted in Illustration 3.
6. Click the Create button.
The new database is created, and we arrive at the Database window, as shown in Illustration 4.
7. Click the Queries icon in the Objects pane on the left side of the window.
8. Click New atop the Query window that appears, as depicted in Illustration 5.
The New Query dialog appears, from which we can select the means by which we create our query. Because we must use syntax specific to MSSQL Server 2000, as we discussed earlier, we will not be able to use wizardry at this juncture.
9. Click-select Design View.
The New Query dialog, with our selection, appears as shown in Illustration 6.
10. Click OK.
11. Click Close to dismiss the empty Show Table dialog box that appears.
Again, we cannot rely upon the graphical query design tools, as we must concoct a query using SQL that meets the dialectal requirements of the back-end RDBMS. We will need to leave the graphic query builder and get to the SQL Specific design view.
12. Select Query --> SQL Specific --> Pass-Through on the Query menu, as depicted in Illustration 7.
The SQL Specific editor appears.
13. Click the Properties icon atop the view, as partially shown in Illustration 8.
The Query Properties page opens. Here we will assign connection information for the back-end server. We might have created ODBC connections in advance, but we will walk through the complete process here, as if we were doing it "on the fly," so as to cover all the bases. For more information on establishing an ODBC connection, see the MSSQL Server documentation, MS Access documentation, or other relevant sources.
Note that if we do not specify a connection string here, MS Access will use the default that initially appears, "ODBC." If we take that route, we will be prompted for connection information at query run time.
NOTE: Some of the connection information that I depict in the illustrations will obviously need to be supplanted with settings that are contextually correct from the perspective of your own environment.
14. Click Build, the ellipses icon ("...") that appears on the right side of the ODBC Connect Str box on the Query Properties page, as shown in Illustration 9.
The Select Data Source dialog appears, defaulted to the File Data Source tab. While there are various options for the types of source we can establish, we will create a Machine Data Source at this point.