Part A. Database implementation using MS Access (30 Marks)
The sample solution of assignment 1 will be released on the unit website approximately two
(2) weeks after the assignment 1 due date. You must use that sample solution of
assignment 1 only for the following tasks:
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 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).
For your help, an example for a Student relations 3NF justification has been provided below:
STUDENT (StudentID, Name, Address, DateOfBirth)
i. The primary key is StudentID which identifies a student. There will be one student name
per Student ID because only one name is recorded for each student. Even though a
student may have multiple addresses (e.g. a home address and a work address), the
case study states that there is a need to record the home address only and hence there
will be only one address for each student. There will be only one date of birth for each
student. Thus, there are no repeating groups. Hence, this relation is in 1NF.
ii. The primary key is StudentID. This is the only candidate key since Name is not
guaranteed to be unique (two different students may have the same name). Address is
also not guaranteed to be unique. This means that Student ID functionally determines
every other attribute in the table. The candidate key, StudentId, is a simple and single
valued attribute. Therefore no partial dependencies are possible. Hence, the relation is
iii. Name cannot be used to functionally determine any other attribute in the table since
two different students may have the same name; likewise for address and date of birth.
Therefore there are no transitive dependencies in the table. Therefore it meets the
requirements of first, second and third normal form.
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. The remainder of this document in
Part A 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
? 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.
Select one table that contains at least three different data type attributes, such as date, text
and currency value attributes. For that selected table, develop and implement suitable
integrity constraints for its attributes. You need to provide those integrity constraints in the
following tabular form:
Attribute Data type Integrity constraint
Create queries to answer the following information requests. Note: Do not use the Access
query builder (QBE) to create your queries you should type the queries manually using
The marking process of the queries for information requests may also consider the
effectiveness of your SQL statements that have been used in the queries. It is important
that your SQL statements must reflect the correct business logic & SQL syntax.