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Task
Table 1: Home Library
ISBN
Title
Author_LastName
Author_FirstName
Publisher
Date
Edition
Media
369852
Cosmos
Sagan
Carl
Random House
1980
1
Book
741258
No Secrets
Simon
Carly
Elektra
1972
CD
654789
Symphony No 3 DurEroica Op 55
Beethoven
Ludwig
1805
789654
On the Decay of the Art of Lying
Twain
Mark
Project Gutenberg
1880
eBook
258963
The Adventures of Sherlock Holmes
Conan Doyle
Arthur
125896
The Divine Comedy
Alighieri
Dante
357951
The Hitchhikers Guide to the Galaxy
Adams
Douglas
Pan books
1979
852369
The Return of the King, Soundtrack
Shore
Howard
Reprise
2003
831975
Unseen Academicals
Pratchett
Terry
Doubleday
2009
Using the Home library relation above:
1. Draw a dependency diagram to show the functional dependencies that exist in this relation.
2. Decompose the Home Library relation into a set of 3NF relations.
3. Draw the Relational Schema for each of these 3NF relations and show the referential integrity constraints that apply.
Verified Expert
The student will understand the concept of functional dependency and the types of full functional dependency, transitive dependency and multi-valued dependency. How to apply the normalization process to recognize the different types of normal forms and how to convert the table into dependency graph and representation of the table.
TASK 2 The set of relations is in 3NF and accurately identifies all PKs and all the relevant attributes The set of relations is in 3NF and accurately identifies all PKs and most of the relevant attributes The set of relations is in 3NF identifies most PKs and some of the relevant attributes The set of relations is mainly in 3NF and identifies some PKs and some of the relevant attributes The set of relations is not in 3NF and identifies few or no PKs and few or none of the relevant attributes TASK 3 The relational schema accurately describes each entity and correctly shows all of the referential integrity constraints The relational schema accurately describes each entity and correctly shows most of the referential integrity constraints The relational schema describes each entity and shows some of the referential integrity constraints The relational schema describes most entities and shows some of the referential integrity constraints The relational schema describes few entities and shows few or none of the referential integrity constraints
Rationale This assessment aligns with the following subject outcomes: • be able to critically analyse a database design and apply normalisation theory and techniques; TASKS HD DI CR PASS FAIL TASKS 1 The dependency diagram accurately identifies and correctly shows all PKs and all functional, partial, and transitive dependencies The dependency diagram accurately identifies and correctly shows all PKs and most functional, partial, and transitive dependencies The dependency diagram identifies and shows most PKs and some functional, partial, and transitive dependencies The dependency diagram identifies and shows few PKs and few functional, partial, and transitive dependenciesrelations and includes the related entities, PKs, attributes, relationships, associative entities (if applicable), cardinalities and optionalities. The dependency diagram identifies and shows few or no PKs and few or no functional, partial, and transitive dependencies and optionalities.
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