Saving Data on Android

Question
 table using the 
question
 object passed as a parameter and 
the second method is going to create a new record in your 
Answer
 table.
You might have also noticed the 
onConflict
 parameter in the 
@Insert
 annotation. 
It allows you to define an 
OnConflictStrategy
, which will be used to specify what 
happens in case there is a conflict when creating a new entry. There are several 
options:
•
ABORT
 this is the default option and instructs Room to abort the transaction, 
return an error and roll back any changes made by the current SQL statement.
•
FAIL
 makes the transaction fail and return an error.
•
IGNORE
 makes the transaction ignore the conflict and continue as expected.
•
REPLACE
 replaces the old data with the new values and continues the transaction.
•
ROLLBACK
 aborts the current transaction and rolls back any changes made.
That is all you need to create a DAO to insert new questions and answers into your 
Database. Now, create the methods to delete questions.
Add the following method:
@Query("DELETE FROM questions")
 
fun
 
clearQuestions
()
Saving Data on Android
Chapter 8: The DAO Pattern
raywenderlich.com
134

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The above code uses the 
@Query
 annotation to execute a