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CUR_TBLUSER) There are other ways of calling a stored procedure in your Oracle database, such as using the ODBC {call storedprocedurename} syntax, but I’ve chosen to show you the way that looks and feels as close to the one used for calling SQL Server procedures. Using Views A view is, as the word suggests, a display of data in your database. Perhaps it helps to think of a view as a virtual table. It can be a subset of a table or an entire table, or it can be a subset of several joined tables. Basically, a view can represent just about any subset of data in your database, and you can include other views in a view.

NET IDE, you can also view the trigger source by expanding your database, expanding the Tables node, expanding the table with the trigger, and double-clicking the trigger. Summary In this chapter, I discussed how to create various server-side objects for serverside processing of your data. I demonstrated stored procedures, views, and triggers, and showed you how to create, run, and execute a stored procedure from code; how to create, run, and use a view from code, including updating the view; and finally how to create triggers.

NOTE The trigger editor performs syntax checking when you save your trigger, meaning if the syntax of your trigger is invalid, you aren’t allowed to save it to your database. EXERCISE 1) Create a new trigger for the tblUser table and save it with the name tblUser_Update. 2) This is an update trigger, so you need to change the text on Line 3 to FOR UPDATE. 3) Replace the text on Line 5 and down with the following: DECLARE @strFirstName varchar(50) /* Get the value for the FirstName column */ SELECT @strFirstName = (SELECT FirstName FROM inserted) /* Check if we’re updating the LastName column.

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