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Northern IrelandSoftware Systems DevelopmentQuick questions
A2 1 Systems Approaches and Database Concepts
Quick questions on Relational database concepts: tables, keys, relationships and integrity - CCEA A-Level Software Systems Development
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is q1?Show answer
Define a primary key and state two properties it must have. [3 marks]
What is q2?Show answer
State what referential integrity ensures about a foreign key value. [2 marks]
What is q3?Show answer
Give one advantage of a relational database over a single flat file. [1 mark]
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