Core data updating records

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The latest version of this topic can be found at Recordset: Adding, Updating, and Deleting Records (ODBC). For more information about how updates are carried out and how your updates appear to other users, see Recordset: How Recordsets Update Records (ODBC).

Normally, when you add, edit, or delete a record, the recordset changes the data source immediately.

You can instead batch groups of related updates into transactions.

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In this article you have seen how to create a table and insert values into the table fields and how to search the records in the database to a Windows Forms application and after fetching these records you can update your records and save then back into the database.

If a transaction is in progress, the update does not become final until you commit the transaction.

However, we only showed you how to insert records into data store through Core Data API and left out the update & delete operations.In the last tutorial, we already discussed how to fetch and save a managed object using Core Data API.So how can you update or delete an existing managed object from database? To allow user to delete a record from the table view, as you know, we can simply implement the “can Edit Row At Index Path” and “commit Editing Style” methods.For information about transactions, see Transaction (ODBC).The following table summarizes the options available for recordsets with different update characteristics.

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