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Data persistence
Different schemes
Question | Answer |
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Define Data Persistence | Persistent data is static and does not change with time (not dynamic). Persistent data stores core information. |
What is persistent data example? | For example, an organization's financial data must be persistent. Persistent data cannot be deleted by external processes or objects until the user deletes it, meaning it's stable. |
Why is Data Persistence important ? | Persistence refers to the lifetime of an object or a system process. Persistent data is important because of its cross-platform access, non-volatility, reliability, stability, static, and time-independent features. |
How do you ensure data persistence | 1.Persist all its information to disk storage for durability. 2.Ensure data is highly available by maintaining a readily available second copy of all data, and automatically failover without downtime in case of server crashes. |
What is persistent data in Android? | Persistent data is data which you want to be available even after you fully close and restart your app |
What are the three most common ways to safe this data locally | Shared Preferences, a local database or the file system (store data as a file). |
What is Persistent Data in Android ? | The capability to have data that the app uses or relies on to continue to be available regardless of changes to the app's state as it moves through the app life cycle |
What are the primarily three basic ways of persisting data in Android ? | A lightweight mechanism known as shared preferences to save small chunks of data. Traditional file systems. A relational database management system through the support of SQLite databases. |
Files | You can create and update files |
Preferences | Android allows you to save and retrieve persistent key-value pairs of primitive data type. |
SQLite database | A relational database management system |