Saving Data on Android

data
 package contains two packages: 
db
 and 
model
. The 
db
 package contains 
the 
QuestionDatabase
 class, which defines your Room database. The 
model
 
package contains your entities: 
Question
 and 
Answer
.
• The 
view
 package contains all your activities: 
MainActivity
, 
QuestionActivity
 
and the 
ResultActivity
.
Now 
Build
 and 
Run
 the app to verify that everything is working properly:
Cool! Now you are ready to start creating some Database Access Objects in order to 
manipulate the data.
Saving Data on Android
Chapter 8: The DAO Pattern
raywenderlich.com
132

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Using DAOs to query your data
Database Access Objects are commonly known as 
DAOs
. DAOs are objects that 
provide access to your app's data, and they are what make Room so powerful since 
they abstract most of the complexity of communicating to the actual database. Using 
DAOs instead of query builders or direct queries makes it very easy to interact with 
your database. You avoid all the hardship of debugging query builders, if something 
breaks, and we all know how tricky SQL can be! They also provide a better