Recent Question/Assignment

Assessment item 2
Modelling
Value: 12%
Due date: 26-Aug-2017
Return date: 18-Sep-2017
Submission method options
Alternative submission method
TASK
Overview of business case:
Drive2Impress is a small business that sells cars in Canberra. Drive2Impress can obtain cars from several different suppliers. Drive2Impress keeps its cars in several showrooms across the city. At this stage customers cannot view the available cars online so to order they must visit one of the showrooms. Customers call Drive2Impress to arrange a visit before they go to a showroom. Drive2Impress has been using an Excel spreadsheet to track their business activities; however, this has caused many redundancies and inefficiency.
With view to their expanding business and under the new management, they decided to investigate the option of implementing a database system. Accordingly, they hired you to design a relational database to better track and record their operational data.
NOTE: The overview of business case is included here to provide context only. For the purpose of identifying entities, attributes and relationships between entities please read Drive2Impress business rules and instructions for creating your ERD below.
NOTE: For guidance on how to draw an ERD based on business rules, watch this YouTube video: https://www.youtube.com/watch?v=YvJ4t9_2SWk
Drive2Impress business rules and instructions for creating your ERD:
1. Each supplier supplies one or more different types of cars. Each car type is supplied by only one supplier. Every supplier is identified by a supplier code. The company name, street, city, state, postcode, phone number, and account number are also kept in the system for every supplier. For car type, the type name (i.e. Sedan, SUV, ute, etc.) and market segment (i.e. small family, large family, etc.) are kept in the system.
• Create an ERD that represents the entities, attributes, the relationships between entities, and the cardinality and optionality of each relationship that are described by this business rule.
2. Each car type has one or more models. Each model is supplied as part of a car type. For each model, the model name, engine capacity, seating capacity, year manufactured, and Drive2Impress retail price must be kept in the system.
• Add the entities, attributes, the relationships between entities, and the cardinality and optionality of each relationship that are described by this business rule to the same ERD that you created for business rule 1.
3. Each car type is kept in more than one showroom. Each showroom keeps one or more car types. Each showroom is identified by a showroom ID. For each showroom address, postcode, phone number are kept in the system.
• Add the entities, attributes, the relationships between entities, and the cardinality and optionality of each relationship that are described by this business rule to the same ERD that you created for business rule 1 and business rule 2.
4. Each customer can visit one or more showrooms. Each showroom can be visited by more than one customer. Each customer is identified by a customer code. For each customer the name, mobile phone, address and the expected date and time of arrival are kept in the system.
• Add the entities, attributes, the relationships between entities, and the cardinality and optionality of each relationship that are described by this business rule to the same ERD that you created for business rule 1, business rule 2 and business rule 3.
NOTE
Use https://www.draw.io to create your ERD
Use Crows Foot notations
Include the PKs where appropriate
Any M:N relationship is to be resolved to a 1:M relationship
Manually drawing the ERD is NOT acceptable.
Rationale
This assessment aligns with the following subject outcomes:
• be able to gather, analyse and model business requirements using Enhanced Entity Relationship Diagrams (EERD);
Marking criteria
Each task is worth 3 marks. The marking criteria for this assignment is:

Criteria HD DI CR PS
be able to gather, analyse and model business requirements using Enhanced Entity Relationship Diagrams (EERD); Model identifies all PKs, attributes and relationships. Model accurately represents all four business rules and includes all entities, PKs, attributes, relationships, associative entities (if applicable), cardinalities and optionalities. Model identifies PKs, attributes and relationships with minor omissions. Model accurately represents the business rules and includes the identified entities, PKs, attributes, relationships, associative entities (if applicable), cardinalities and optionalities. Model identifies key PKs, attributes and relationships. Model represents key business rules and includes the related entities, PKs, attributes, relationships, associative entities (if applicable), cardinalities and optionalities. Model represents key business rules and draws out the key relationships and includes the related entities, PKs, attributes, relationships, cardinalities and optionalities.
Presentation
Use https://www.draw.io to create your ERD
Requirements
Either save your ERD diagram as a PDF or embed it in a Word document.
Don't use any other file formats
Don't submit your file in XML
Please include your student ID, name and subject code in the diagram
Submission Method: Turnitin. Details will be provided by the lecturer during the session.

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