Oracle updating through a view Free phone line chat dominant women
) On the i Series, limited support for INSTEAD OF triggers was delivered by PTF SI16101 for i5/OS V5R3 systems. Many PC developer tools–for example, those that come with Visual Studio .
It would be convenient if programmers could simply treat related tables as a single table for the purpose of modifying data.The fields in a view are fields from one or more real tables in the database.You can add SQL functions, WHERE, and JOIN statements to a view and present the data as if the data were coming from one single table.With the DB2/400 database embedded in i5/OS V5R4, these modification statements against multi-table views can be accomplished with a special type of trigger called an INSTEAD OF trigger. The biggest benefit I see for this feature is in the client/server realm.INSTEAD OF triggers are special SQL triggers that give the database specific code to run when performing data manipulation (INSERT, UPDATE, and DELETE) against a view. For instance, many third-party, PC-based packages offer simple ODBC interfaces that can only link to a single table to do data updates.
Usually, to do this would require multiple insert, update, and delete statements for each table in the join.
Follow the on screen instructions to perform the update.
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