Why databases persist data in FastAPI - Quick Recap

Recall & Review

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What does it mean when we say a database 'persists data'?

It means the database saves data permanently so it stays safe even if the app or computer turns off.

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Why can't we just keep data in a program's memory?

Because memory is temporary and clears when the program stops, so data would be lost without saving it somewhere permanent like a database.

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How does a database help a FastAPI app with data?

It stores user info, settings, and other data safely so the app can get it anytime, even after restarting.

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What is one real-life example of data persistence?

Like saving a photo on your phone gallery so you can see it later, databases save data so apps can use it later.

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What happens if data is not persisted in a database?

The data disappears when the app closes, so users would lose their info or progress.

What does data persistence in a database ensure?

A Data is lost when the computer restarts

B Data is deleted when the app closes

C Data is only stored in temporary memory

D Data stays saved even after the app closes

Persistence means data remains saved and accessible after the app or system stops.

Why is storing data only in memory not enough?

A Memory clears when the app stops

B Memory is permanent

C Memory is slower than databases

D Memory can store unlimited data

Memory is temporary and clears when the app or device turns off, so data would be lost.

Which of these is a benefit of using a database with FastAPI?

A Data is saved and can be reused anytime

B Data is never saved

C Data is only stored in the browser

D Data disappears after restart

Databases save data permanently so FastAPI apps can access it anytime.

What real-life example best explains data persistence?

A Writing notes on paper and throwing them away

B Drawing on a foggy window

C Saving a photo on your phone gallery

D Speaking and forgetting words

Saving a photo means you can see it later, just like data saved in a database.

What happens if data is not persisted?

A Data is saved forever

B Data is lost when the app closes

C Data is backed up automatically

D Data is shared with other apps

Without persistence, data disappears when the app or device stops.

Explain in your own words why databases are important for saving data in apps like FastAPI.

Think about what happens if you turn off your computer without saving.

Describe a simple real-life example that helps you understand data persistence.

What do you do to keep important things safe for later?