IMS504/IMS506

CONFIDENTIAL IM/MEI 2012/IMS504/IMS506/SMI614

UNIVERSITI TEKNOLOGI MARA
MID TERM TEST

COURSE : DATABASE MANAGEMENT SYSTEM FOR
INFORMATION PROFESSIONAL

COURSE CODE : IMS504/IMS506

EXAMINATION : MEI 2012

TIME : 1 HOURS AND 30 MINUTES

INSTRUCTIONS TO CANDIDATES

1. This question paper consists of three (3) parts : PART A (1 Question)
PART B (3 Questions)
PART C (1 Questions)

2. Answer ALL questions from PART A PART B and PART C.

3. Do not bring any material into the examination room unless permission is given by the
invigilator.

4. Please check to make sure that this examination pack consists of :

i) The Question Paper

DO NOT TURN THIS PAGE UNTIL YOU ARE TOLD TO DO SO
This examination paper consists of 4 printed pages

© Hak Cipta Universiti Teknologi MARA CONFIDENTIAL

CONFIDENTIAL 2 IS/NOV2012/IMS504/IMS506
PART A

Define the following terms:

a. Database
Is a shared, integrated computer structure that stores a collection of end-user
data or metadata or
Is a collection of related tables and other structures

b. Null Value
- Empty space, no value for the intersection of row and column in relational table.

c. Weak Entity
- meets two conditions: Existence-dependent and Primary key partially or totally
derived from parent entity in relationship

(6 marks)
PART B

QUESTION 1

Briefly discuss any two (2) functions of Database Management System (DBMS).

a. Data dictionary management
b. Data storage management
c. Data transformation and presentation
d. Security management
e. Multiuser access control
f. Backup and recovery management
g. Data integrity management
h. Database access language and application programming interfaces
i. Database communication interface
(4 marks)

QUESTION 2
Briefly discuss any two (2) factors that are important in a DBMS software selection?
(4 marks)

Answer:

Although the factors affecting the purchasing decision vary from company to company, some of
the most common are:
 Cost. Purchase, maintenance, operational, license, installation, training, and conversion
costs.
 DBMS features and tools. Some database software includes a variety of tools that
facilitate the application development task. For example, the availability of query by
example (QBE), screen painters, report generators, application generators, data
dictionaries, and so on, helps to create a more pleasant work environment for both the
end user and the application programmer. Database administrator facilities, query
facilities, ease of use, performance, security, concurrency control, transaction processing,
and third-party support also influence DBMS software selection.
 Underlying model. Hierarchical, network, relational, object/relational, or object.

 Portability. Across platforms, systems, and languages.
 DBMS hardware requirements. Processor(s), RAM, disk space, and so on.

QUESTION 3

Figure 2: Relational diagram

Based on figure 2, construct the business rule reflecting to the relational diagram.
(6 marks)

Answer:
One region can be the location for many stores. (1Mark)
Each store is located in only one region. (1Mark) Therefore, the relationship between REGION and
STORE is 1:M.

Each store employs one or more employees. (1Mark)
Each employee is employed by one store. (1Mark) (In this case, we are assuming that the business
rule specifies that an employee cannot work in more than one store at a time.) Therefore, the
relationship between STORE and EMPLOYEE is 1:M.

A job can be assigned to many employees. (1Mark)
Each employee can have only one job assignment. (1Mark)

(In this case, we are assuming that the business rule specifies that an employee cannot have more
than one job assignment at a time.) Therefore, the relationship between JOB and EMPLOYEE is 1:M.

QUESTION 4

Table 1

Based on the file structure shown in Table 1, answer the following problems:
A. Data type for manager phone?
Answer:
TEXT

B. How many records are there per record?
Answer:
Each of the records is composed of seven (7) records

C. How many fields are there per record?
Answer:

Each of the records is composed of five fields (PROJECT_CODE through
PROJECT_BID_PRICE.)

D. Identify one (1) field can be consider as composite attribute
Answer: either project_manager or manager_phone or manager_address

(4 marks)

QUESTION 5

Figure 1: Dependency Diagram
nd
Based on figure 1, complete the normalization process to second normal form (2 NF) by illustrating
the entities that can be derived.

(6 marks)
Answer: (with name of entity and attributes for each entity)



PART C

Answer all question.

QUESTION 1
Based on Figure 3 below:

Figure 3 Tables structure for Project

a. Draw Entity Relationship Diagram (ERD) that meets the tables structure.
(12 marks)



b. Using template such below, create the data dictionary using template that meets
overall tables structure.
(8 marks)

Table Name Attribute Name Type PK or FK

EMPLOYEE Emp_num TEXT/INTEGER PK

Emp_lname TEXT

Emp_fname TEXT

Emp_initial TEXT

Emp_hiredate DATE/TIME

Job_code TEXT/INTEGER FK

ASSIGNMENT Assign_num TEXT/INTEGER PK

Assign_date DATE/TIME

Proj_num TEXT/INTEGER FK

Emp_num TEXT/INTEGER FK

Assign_hours NUMBER/DOUBLE/FLOAT

Assign_charge_hours CURRENCY/NUMBER


Assign_charge CURRENCY

JOB Job-code TEXT/INTEGER PK

Job_description TEXT

Job_chargehour CURRENCY/NUMBER

PROJECT Proj_num TEXT/INTEGER PK

Proj_name TEXT

Emp_num TEXT/INTEGER FK


IMS504/IMS506

More Related Content

What's hot

Viewers also liked

Similar to IMS504/IMS506

More from UiTM

Recently uploaded

IMS504/IMS506