Learning objective
Database design and normalisation techniques: Normalise relations to third normal form. Students should know what properties are possessed by a relation in third normal form. Understand why databases are normalised.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
0
Flashcards
0
Questions
Topic
Database design and normalisation techniques
Subtopic
Database design and normalisation techniques
Study support
Understand this objective
Quick explanation
Database design and normalisation techniques: Normalise relations to third normal form. Students should know what properties are possessed by a relation in third normal form. Understand why databases are normalised
- This point belongs to Database design and normalisation techniques, especially Database design and normalisation techniques.
- You need to be able to database design and normalisation techniques: Normalise relations to third normal form. Students should know what properties are possessed by a relation in third normal form. Understand why databases are normalised.
- 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 Database design and normalisation techniques to exam-style questions, flashcards, and revision notes for Database design and normalisation techniques.
Quick student answer
Which statement describes a relation in third normal form (3NF)?
Direct answer
It is in second normal form and no non-key attribute depends on another non-key attribute.
Key terms
- Third normal form (3NF): A normal form in which a relation is in second normal form and no non-key attribute depends on another non-key attribute.
- Transitive dependency: A dependency in which a non-key attribute depends indirectly on the key through another non-key attribute.
Common trap
Confusing no duplicate rows with 3NF: Check the dependencies between attributes. A 3NF relation must be in second normal form and must not contain a dependency of one non-key attribute on another non-key attribute.
Related questions
Try this as a practice card
Question 1 of 4
Choose an answer, get feedback, then move sideways through the set.
Flashcard prompts
Flip through the key recall cards
Flashcard 1 of 4
Revision tools