1)

Suppose you are developing an application that uses the 'Room' database to manage its local database. The app also exports its data using a 'Content Provider'. Briefly explain how does the Content Provider class use the Room database layers to achieve its tasks.

2)

Develop a piece of code that inserts a new record in a database that is available in another application and can be accessed via the authority "hello.world.2". The new record, which is detailed below, must be saved in a table named 'cars'.

• 'maker':'BMW'
• 'model':'X7'
• 'year':2018

3)

Briefly explain the role of the 'UriMatcher' class in an application that needs to share its data with other apps.