40Backend & data

NoSQL

A database without a fixed table structure — more flexible, good for complex or shifting data.

For example

I store user study records in MongoDB, no complex tables needed.

Resources

Related terms

What users cannot see, handling data and business logic behind the scenes.

For example

When I log in, the backend verifies my account and password.

Where data is stored long term: user details, saved items and so on.

For example

The words I saved live in the database and are still there next time.

The window through which two pieces of software place orders at each other.

For example

My app sends a word to the AI through an API and gets the explanation back.