Learning objective
Relational databases: Explain the concept of a relational database. Be able to define the terms: • attribute • primary key • composite primary key • foreign key.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Relational databases
Subtopic
Relational databases
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Quick explanation
Relational databases: Explain the concept of a relational database. Be able to define the terms: • attribute • primary key • composite primary key • foreign key
- This point belongs to Relational databases, especially Relational databases.
- You need to be able to relational databases: Explain the concept of a relational database. Be able to define the terms: • attribute • primary key • composite primary key • foreign key.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Why it matters
This objective helps connect Relational databases to exam-style questions, flashcards, and revision notes for Relational databases.
Quick student answer
Which description best explains a relational database?
Direct answer
A collection of related tables that store data in a structured way
Key terms
- Primary key: An attribute or combination of attributes that uniquely identifies each record in a table.
- Foreign key: An attribute in one table that refers to the primary key of another table, allowing the tables to be related.
Common trap
Confusing a foreign key with a primary key: A primary key uniquely identifies records in its own table. A foreign key refers to a primary key in another table and is used to create a relationship.
Related questions
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Flashcard prompts
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