Code for updating the database

Posted by / 21-Mar-2017 14:33

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Room is designed to abstract away the underlying database tables and queries.

Therefore it provides an easy way to create and use Sqlite database.

Room does not support object references between entities, to avoid potential performances issues.

Even though you cannot use direct relationships, it is possible to define foreign key constraints between entities.

Source code is included to get you started quickly. Everything you need in one place, connect to My SQL its easy and can bring your application to the next level.

The database requires limited memory at runtime (approx. Room is an annotation processing based SQL object mapping library provided by Google.This will use the SQL UPDATE command with the WHERE clause to update the selected data in the My SQL table tutorials_tbl.The following example will update the tutorial_title field for a record having the tutorial_id as 3.Unfortunately this requires some overhead in the database processing therefore you should wrap updates in the SQLite database in an transaction and commit this transaction after several operations. This way Android can buffer the query results efficiently; as it does not have to load all data into memory. This way the other process can access the data in between.points to a resources which can be accessed via a provider.

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