Draw a relational schema for your 3nf relations

Assignment Help Database Management System
Reference no: EM131607017

Assessment : Normalisation

Task

Prod_code

Prod_Name

Purchase_date

Qty_sold

Prod_price

Inv_No

Inv_Date

Vendor_ID

Vendor_Name

ES12345

Esky Soft Cooler

12/7/2016

60

19.50

B-5565

17/7/2016

112

Innisfail

MAK2347

Angle Grinder

15/9/2016

10

85

B-5570

18/9/2016

106

RC Tools

KAR62705

High Pressure Cleaner

13/10/2016

50

190

B-5572

18/9/2016

103

Ardonly

AEC25874

Circular Saw

15/9/2016

15

119

B-5570

18/9/2016

106

RC Tools

ES2396

Water filter

20/8/2016

45

26.50

B-5585

25/8/2016

112

Innisfail

Using above table

1. Draw a dependency diagram to show the functional dependencies in the relation

2. Decompose the relation into a set of 3NF relations

3. Draw a relational schema for your 3NF relations and show the referential integrity constraints

4. Create an ERD that represents your 3NF relations

Reference no: EM131607017

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Reviews

len1607017

8/21/2017 5:05:18 AM

Requirements Either save your diagrams in a PDF file or embed them in a Word document. Don't use any other file formats Please include your student ID, name and subject code in your submission. Submission Method: Turnitin. Details will be provided by the lecturer during the session.

len1607017

8/21/2017 5:05:11 AM

PS Analysis identifies key PKs and functional dependencies and draws out relevant 3NF relations. Creates an ERD that represents identified 3NF relations and includes the related entities, PKs, attributes, relationships, cardinalities and optionalities.

len1607017

8/21/2017 5:05:05 AM

DI CR Analysis identifies PKs and functional, partial and transitive dependencies with minor omissions. Accurately identifies 3NF relations, including PKs, relevant attributes and referential integrity constraints with minor omissions. Creates an ERD that represents identified 3NF relations and includes all entities, PKs, attributes, relationships, associative entities (if applicable), cardinalities and optionalities. Analysis identifies key PKs and functional, partial and transitive dependencies. Identifies key 3NF relations, including PKs and relevant attributes and referential integrity constraints. Creates an ERD that represents identified 3NF relations and includes the related entities, PKs, attributes, relationships, associative entities (if applicable), cardinalities and optionalities.

len1607017

8/21/2017 5:04:59 AM

Marking criteria Each task is worth 3.25 marks. The marking criteria for this assignment is: Criteria HD be able to critically analyse a database design and apply normalisation theory and techniques; Analysis identifies all PKs and functional, partial and transitive dependencies. Accurately identifies all 3NF relations, including PKs, relevant attributes and referential integrity constraints. Creates an ERD that represents all 3NF relations and includes all entities, PKs, attributes, relationships, associative entities (if applicable), cardinalities and optionalities.

len1607017

8/21/2017 5:04:24 AM

Manually drawing the dependency diagram, or the set of 3NF relations or the relational schema or the ERD is NOT acceptable. Rationale This assessment aligns with the following subject outcomes: o be able to critically analyse a database design and apply normalisation theory and techniques;

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