AAD Data Management & Storage — Questions and Answers
Question 1: Which Android component is primarily used for managing structured data within an app?
- BroadcastReceiver
- Service
- ContentProvider (Correct answer)
- Activity
Correct answer: ContentProvider
A ContentProvider allows an app to manage and share structured data with other applications in a secure manner.
Question 2: Which class is used to store key-value pairs in Android?
- SQLiteDatabase
- SharedPreferences (Correct answer)
- FileOutputStream
- Intent
Correct answer: SharedPreferences
SharedPreferences is a lightweight storage option used to store small amounts of key-value data persistently.
Question 3: Which database system is commonly used in Android for local data storage?
- MySQL
- PostgreSQL
- SQLite (Correct answer)
- Firebase Firestore
Correct answer: SQLite
SQLite is an embedded database that allows Android applications to store and manage structured data efficiently.
Question 4: Which method is used to insert data into an SQLite database in Android?
- put()
- insert() (Correct answer)
- store()
- add()
Correct answer: insert()
The insert() method of the SQLiteDatabase class is used to add new records to a database table.
Question 5: Which cloud-based solution is commonly used for real-time database synchronization in Android apps?
- SQLite
- Room Database
- Firebase Realtime Database (Correct answer)
- MongoDB
Correct answer: Firebase Realtime Database
Firebase Realtime Database provides cloud-based real-time data synchronization across multiple devices.
Question 6: Which library simplifies working with SQLite in Android by providing an abstraction layer?
- SQLiteOpenHelper
- Room (Correct answer)
- Firestore
- LiveData
Correct answer: Room
Room is an Android Jetpack library that provides an abstraction layer over SQLite to enhance database operations and reduce boilerplate code.
AAD Data Management & Storage
Which Android component is primarily used for managing structured data within an app?