Explain Star Schema.

DWQA QuestionsCategory: QuestionsExplain Star Schema.
1 Answers
Editor Staff answered 2 months ago

It is a traditional database schema with a central table. Satellite tables map IDs to physical names or descriptions and can be connected to the central fact table using the ID fields; these tables are known as lookup tables and are principally useful in real-time applications, as they save a lot of memory. Sometimes star schemas involve several layers of summarization to recover information faster.