In this lesson, we'll describe how to update entities from a Room database using the @Update annotation.

We'll show how @Update can be used to update tasks from our database.

We'll also show what the equivalent full SQLite @Query would look like. This will highlight how much less code is required to update an entity when using the @Update annotation.

Summary of Content:

• Defining a function which uses @Update annotation
• How to provide the task to be updated
• What the equivalent full update SQL query would be if using @Query
• When you might prefer to use the full @Query approach instead of @Update

Links:

• Android Training - Room
• @Update