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Posted by / 03-Aug-2017 20:17

Updating a view

Problem: You can't update records in multiple tables when the view references more than one base table.

I will update the records via view in three ways to explain this problem.

In a production environment, the state of managed objects on the server is likely to change frequently.

i OS 11 brings a bold, dynamic new style to UI elements systemwide.

While scrolling, the pages which goes out of the screen will be destroyed in destroy Item(View Group, int, Object) method. get Count() returns the number of items which will be shown in the View Pager. is View From Object(View, Object) method checks whether the Object returned from instantiate Item(View Group, int) method is linked to the View supplied here.

Views can provide advantages over tables: Just as a function (in programming) can provide abstraction, so can a database view.Unlike ordinary base tables in a relational database, a view does not form part of the physical schema: as a result set, it is a virtual table computed or collated dynamically from data in the database when access to that view is requested.Changes applied to the data in a relevant underlying table are reflected in the data shown in subsequent invocations of the view.Learn how to adopt new features in your app, including large title bars with integrated search, landscape tab bars, and more powerful swipe actions.Find out about new patterns and enhancements that make it easier than ever to craft the perfect experience for your users.

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You can only update columns that belong to a single base table.

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