Databases

A database is an organized collection of data, generally stored and accessed electronically from a computer system.

Types of Databases

There are two main categories of databases:

• Relational Databases (sql): Data is stored in tables with a predefined schema. Examples include PostgreSQL, MySQL, and SQLite.
• Non-Relational Databases (nosql): Data can be stored in various formats like document, key-value, or graph. Examples include MongoDB, Redis, and Neo4j.

Frameworks like django provide an ORM to abstract away the differences between various SQL databases.

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