Android Database Handling
Android database handling primarily relies on SQLite, a lightweight, embedded relational database system. Developers can use SQLite to store and manage structured data locally on users' devices. Android provides a robust API for database operations, allowing developers to create, read, update, and delete (CRUD) data through the `SQLiteOpenHelper` class, which facilitates database creation and version management. Additionally, Android supports Room, an abstraction layer over SQLite, which simplifies database interactions by leveraging object mapping and providing compile-time checks. Room allows developers to define database schema using annotations, making the data handling more streamlined and type-safe. Overall, Android's database handling provides efficient, persistent storage solutions suited for mobile applications.
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1 - Overview of Android Data Persistence: Introduce the significance of data persistence in Android applications, explaining how applications need to save data between sessions.
2) Types of Data Storage Options: Discuss the various options Android provides for data storage: SharedPreferences, internal storage, external storage, and databases.
3) SQLite Database: Introduce SQLite as the primary database engine for Android applications, emphasizing its lightweight and embedded nature.
4) Database Creation: Explain the process of creating a SQLite database in Android by extending the `SQLiteOpenHelper` class and implementing `onCreate()` and `onUpgrade()` methods.
5) CRUD Operations: Cover Create, Read, Update, Delete (CRUD) operations in SQLite, providing examples of how to implement each operation using SQL queries in Android.
6) Database Versioning: Discuss how database versioning works in Android and the importance of managing schema changes through the `onUpgrade()` method.
7) Content Providers: Introduce Content Providers as a way to manage access to a structured set of data and how they facilitate data sharing between applications.
8) AsyncTask & Background Operations: Explain the need for performing database operations in the background using `AsyncTask` or similar approaches to avoid UI blocking.
9) Using Room Library: Introduce the Room Persistence Library as a part of Android Jetpack and how it simplifies database interactions with an abstraction layer over SQLite.
10) Entity, DAO, and Database Classes: Cover how to define entities (data models), Data Access Objects (DAOs), and the database class while using Room.
11) LiveData and ViewModel Integration: Explain how Room integrates with LiveData and ViewModel to provide a reactive data handling mechanism in Android applications.
12) Data Migrations: Describe how to handle data migrations in Room when changing the database schema to ensure data integrity and continuity.
13) Using Coroutines with Room: Introduce Kotlin Coroutines for performing asynchronous database operations with Room, simplifying async code.
14) Database Management Tools: Discuss tools and libraries for managing SQLite databases in development, such as SQLite Inspector and DB Browser for SQLite.
15) Testing Database Functionality: Explain the importance of testing database functionality, including writing unit tests and using frameworks like AndroidX Test for database testing.
16) Best Practices: Summarize best practices for database handling in Android, such as maintaining data security, ensuring transaction integrity, and optimizing query performance.
17) Resources for Further Learning: Provide students with additional resources such as documentation, online courses, and tutorials for deepening their understanding of database handling in Android.
This structure provides a comprehensive framework for a training program, covering fundamental concepts and practical skills related to Android database handling.
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