Memory

Query language for managing data.

Index

ACID

Concurrency control

SQL

Restore data after failure.

Regulates simultaneous data access.

Stores data in tables with schemas.

Speeds up data retrieval.

Transaction

Unit of work with ACID properties.

Atomicity, consistency, isolation, durability.

Eliminates redundancy via normal forms.

Normalization

RDBMS

Backup and Recovery