Database Design and Development Assignment -
Assessment task -
1. Normalization
a) Map the ERD, from the sample solution, into a set of relations in at least Third Normal Form (3NF). You must ensure that your relations meet 3NF. There is no need to show your working.
b) Select any two (2) of your relations from the previous step, 1a), and perform the following for each of those two relations:
- List all the functional dependencies exist in the relation.
- Demonstrate that the relation meets Third Normal Form (3NF).
2. Relational database implementation
Note: Use the relations that you created in the above step 1-Normalization to create a database. The recommended tool for this work is Microsoft Access, version 2010 or later. One reason for recommending Microsoft Access is that your unit lecturer/tutor will be able to provide adequate support to you in the use of this tool. If you choose to use a different DBMS, then there is no guarantee that your lecturer/tutor will be able to provide enough support to you. The remainder of this document assumes that you are using MS-Access.
In implementing the ER model provided, you must complete the following tasks:
- Create all the relations in a Microsoft Access database. Consider each attribute in every table and make appropriate choices regarding data types & sizes, indexes, required/not required and validation rules. Your choices should be appropriate for each attribute and should support data integrity. (Note: see the Data Integrity section below for specific data integrity requirements)
- Create relationships as appropriate. Enforce referential integrity for all appropriate relationships in the database. Apply cascade update and/or delete options wherever necessary.
- Review the default index created by Access for each table. You should ensure that the indexes follow the guidelines given in the unit textbook.
- Populate the database with sample data of your own. You must include sufficient sample data to test your queries and report. Please note that the expected result of query questions may depend on the actual sample data populated.
Data integrity -
You are required to implement integrity constraints within the database to enforce the following requirements:
- Insured amount should be positive currency and expressed in 2 decimals only.
- Policy date should have appropriate date value.
- Name of persons such as customer and assessor should not be null.
- Each policy should be related to one property/home.
Implementation Report -
You must also provide a short implementation report describing your experiences with this assignment. You may discuss any of the following:
1. Any two interesting things/procedures you learnt by doing this assignment.
2. Any one requirement of the assignment that was relatively difficult / complex to solve but successfully completed by you.
Use the implementation report to demonstrate that you have thought carefully about the issues that arise when implementing a relational database.
What you should submit -
Microsoft Access databases file containing:
1. Tables with sample data
2. Relationships
3. Queries
4. Integrity constraints
5. Report (object).
A Microsoft Word document containing:
1. Two relations with functional dependencies and demonstration of normalization
2. Implementation report
Your document should contain appropriate identification information (your student number, name, unit number, etc.) and should contain the relevant headings for each section.
Attachment:- Assignment File.rar