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Relational databases
Official AQA 7517 section 4.10.2.
0
Objectives
5
Flashcards
7
Questions
36 min
Study time
AqaA LevelComputer ScienceFundamentals of databases
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Relational databases1 objectives
- Relational databases: Explain the concept of a relational database. Be able to define the terms: • attribute • primary key • composite primary key • foreign key.
Key terms
Primary keyForeign key
Exam tips
- State the role as well as the name: When defining a key, explain what it identifies or links, rather than only repeating the term.
Common mistakes
- 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.
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