🖥️Computer ScienceEN

A-Level CS: Databases & SQL

Learn database theory and SQL for A-Level Computer Science — relational databases, normalisation, entity-relationship diagrams, SQL queries, and transactions.

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Lessons

Relational Database ConceptsPreview

Entity-Relationship Diagrams

Normalisation (1NF, 2NF, 3NF)

SQL: SELECT, WHERE, and ORDER BY

SQL: JOIN Operations

SQL: INSERT, UPDATE, DELETE, and CREATE TABLE

SQL: Aggregate Functions and GROUP BY

Transactions and ACID Properties

Database Security and Integrity

Databases Exam Practice

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