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OCR A: A-Level Computer Science

Revision for OCR A A-Level Computer Science Spec

Section 1 - Components of a Computer

Processor and Computer Hardware

The Processor The processor refers to any electronic component capable of performing mathematical...

Section 4 - Exchanging Data

Relational Databases and Normalisation

Core Info and Definitions A relational database contains tables, making use of relations between...

Database concepts

Modelling Core info and definitions When creating a database, you must identify the entities. A...

Section 5 - Networks and Web Technologies

Structure of the Internet and Internet Communication

The Internet The internet is a network of networks set up to allow computers to communicate with ...

Network Security and Threats

Threats Viruses A virus is a piece of malicious software that has the ability to self-replicate. ...

Section 7 - Data Structures

Storing "lists" of data A static data structure is fixed in size. A dynamic data structure has ...

Section 10 - Computational Thinking

Abstraction Thinking Ahead Thinking Procedurally Thinking Logically & Concurrently Backtracking B...
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