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    Updating database with adapter

    So, you now have to create an exposed web service whose input and output parameters are same as the Database Adapter.

    Please remember that the Exposed service is just a client to access the Database Adapter, and has no relevance to the database or its created Adapter.

    In turn, those design principles affect how you enter data.

    Remember these facts about database objects and design as you proceed.

    In this post, we will learn some ways to handle a database row that is locked by a Database Adapter with Distributed polling capablity in OSB 12c.

    There we go: Sometimes, when we work with Database adapters with distributed polling we are struggling to update the same polled row in the respective pipeline because, basically, the polled row is locked with the option “FOR UPDATE SKIP LOCKED” and it will be released when the process finishes or if an error occurs.

    NET, Part 2 Pages: 1, 2, 3, 4 Because Data Sets are always disconnected from their data sources, making changes in a Data Set never has any effect on the data source.

    To propagate changes, additions, and deletions back to a data source, call the Sql Data Adapter class's Update method, passing the Data Set and the name of the table that is to be updated. Update(ds, "Categories") ' Close the database connection. Close( ) Step 5 forces the Sql Command Builder object to generate SQL statements for performing the database update, insert, and delete operations. Select("Category Name = 'Dairy Products'")(0) ' Change the value in the Description column.

    But a database by itself cannot be exposed as a service.Large updates become much easier to perform when you understand some of the basic principles of database design.An Access database is not a file in the same sense as a Microsoft Office Word 2007 document or a Microsoft Office Power Point 2007 slide deck.Dim str Select As String = _ "SELECT * FROM Categories" Dim da As Sql Data Adapter = New Sql Data Adapter(str Select, cn) ' Set the data adapter object's UPDATE, INSERT, and DELETE ' commands. Select("Category Name = 'Dairy Products'")(0) row("Description") = "Milk and stuff" ' Add a record. New Row( ) row("Category Name") = "Software" row("Description") = "Fine code and binaries" dt. For each row that is to be changed, added, or deleted, the parameters are replaced with values from the row, and the resulting SQL statement is issued to the database. Use the Sql Command Builder class's ability to auto- ' generate these commands from the SELECT command. The choice of which value from the row to use for which parameter is controlled by the Sql Command object's Parameters property.

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