Comprehensive Android Developer Bootcamp - CRUD Operations - Get Item

What is the purpose of using content values when adding an item to a SQLite database?

• To log database operations

• To store the database connection

• To map column names to data values

• To define the database schema

What is the purpose of the 'getWritableDatabase()' method in SQLite?

• To read data from the database

• To write data to the database

• To delete data from the database

• To update the database schema

Which method is used to insert a row into a SQLite database?

• DB.update()

• DB.delete()

• DB.insert()

• DB.create()

Which method is used to retrieve the current timestamp in Java?

• Time.now()

• System.currentTimeMillis()

• Date.getTime()

• Calendar.getInstance()

Which data type is used to store timestamps in the database?

• Integer

• String

• Long

• Float

What is the role of a cursor in retrieving data from a SQLite database?

• To define database schema

• To navigate and access query results

• To execute SQL commands

• To log database operations

What is the first step in retrieving an item from a SQLite database?

• Writing a query

• Opening a cursor

• Logging the operation

• Creating a new database

How can you ensure that a cursor is not null before accessing its data?

• By using a try-catch block

• By checking if the cursor is empty

• By using an if statement to check for null

• By closing the cursor

What is the main challenge when dealing with timestamps in database records?

• They are not accurate

• They are not human-readable

• They are not unique

• They are too short

Why is it important to convert timestamps to a readable format?

• To improve query performance

• To save storage space

• To ensure data integrity

• To make data understandable for users