CA Ch2 - Data Control and Data Organisation

Explore how data is controlled, validated, and organised within information systems.

Learn to identify the three types of data errors: Data Source, Transcription, and Transposition.

Learn how validation checks are used to control the quality of data entered into a system.

Learn the difference between data validation and verification, and identify common validation checks.

Understand how indexing helps databases locate records quickly.

Understand how systems read and write records using different file access methods.