API - Knowledge organiser

This knowledge organiser helps students understand the different types of APIs and the data formats they use. It introduces REST, SOAP, JSON-RPC and XML-RPC, explaining their key features, benefits and limitations in a clear and accessible way. It also compares JSON and XML, showing why JSON is often preferred in data analytics because it is lightweight and easier to process.

The organiser includes simple examples of JSON and XML data, a comparison table of the main API types, key vocabulary definitions and short retrieval questions to support revision. It is designed as a one-page reference sheet that students can use during the lesson or for independent study when preparing for assessments in OCR Cambridge Nationals IT – Data Analytics (TA 3).