ASSIGNMENT

DRIVE FALL DRIVE 2014

PROGRAM MBADS (SEM 3/SEM 5)

MBAFLEX/ MBA (SEM 3)

PGDISMN (SEM 1)

SUBJECT CODE &

NAME

MI0034- DATABASE MANAGEMENT SYSTEMS

BK ID B1217

CREDIT 4

MARKS 60

Note: Answer all questions. Kindly note that answers for 10 marks questions should be approximately of 400 words. Each question is followed by evaluation scheme.

Q.No Questions Marks Total Marks

1 Suppose the employee name, employee id, designation, salary, attendance and address of

any employee has to be stored in a database. You can store these data in a sequential

address book or it can be stored on a hard disk, using a computer and software like

Microsoft Excel. Using this example define a database. List and explain the various

procedures carried on in a DBMS with a detailed example of the database.

A defining a database 1

10 Listing the 3 procedures 3

Explanation 3

One examples for each of them 3

2 Level 2 cache has got higher latency than Level 1 by 2 times to 10 times in 512 KiB

or more. Its value is nearer to kilobyte. This is one of the levels of memory

hierarchy. Define memory hierarchy. What are the other levels in memory

hierarchy? Explain in one life each for each of them. A defining memory hierarchy 1

10 listing the 6 levels 3

explanation 6

3 EMPLOYEE

EMP_ID NAME PROJECT SALARY DEPT_NUM

MUL1 Raashi PR2 30000 1

MUL2 Taashi PR1 43000 2

SMU1 Raksha PR3 25000 3

SMU2 Vidhesh PR2 50000 2

SMU3 Akhilesh PR1 83000 2

DEPARTMENT

DEPT_ID DNAME PLACE

1 HRM Bangalore

2 MIS Bangalore

3 Research Chennai

4 Finance Bangalore

Using these tables answer the following question

a. If we want to see all the employees with salary between 40000 and 50000, which

query can be used?

b. Select employee name from EMPLOYEE table, whose name starts with R

c. Explain aggregate functions and grouping in detail

A a. Query based in BETWEEN operator

2

10

b. Query based in LIKE condition

3

c. Explaining aggregate functions on select

statement, with an example, showing the

output of the query, explaining having

clause, with example

5

4 Consider a book is written by a particular author. And you have to explain to

someone about the relationship that exists between the author and the book.

Normally you can draw a diagram and show the relation. These diagrams are called

entity-relationship diagram in which book is one entity, author is one entity, and the

relationship that exists between the two entities is written. Likewise explain the

various notations used to represent the ER diagram. A listing the notations with diagrams 5

10 explaining each one of them in one line with

example each

5

5 Consider any database of your choice (may be simple banking database/forecasting

database/project management database). Show the deduction of the tables in your database

to the different types of normal forms

A Choosing a proper database 2

10 Explaining the 5 normal forms with respect to the

database chosen

8

6 Read the following case study thoroughly and answer the following questions:

Laxmi bank is one of the largest private sector banks of India. It has an extensive network

of more than 200 branches. It offers banking services to retail as well as corporate clients.

The bank faced a challenge in integrating multi-pronged database management system into

a centralized system. The IT department of the bank also realized that the computing

capabilities of its PCs and servers were not proportionately distributed among all its

branches. Each branch had its database management system stored in a traditional way on

the disk. The total cost of operating and maintaining the current IT infrastructure was very

high and the fundamental shortcomings added to the costs. Moreover, there were also

recurrent problems due to the malfunctioning of the currently operational database

management system. Therefore, the bank’s top management decided to fix the problem and

operationalise a robust database management system. The bank hired an external database

technology consulting firm called AKPY Info systems Limited.

AKPY divided the entire IT infrastructure of the bank around two verticals. The retail

banking vertical and the corporate banking vertical. All the individual database servers from

the individual branches were removed. The entire database system was made virtual such

that the managers and the staff can access only the required information (related to retail

banking or corporate banking) from the respective centralised data centers. There were only

two such centralised data centers (one for retail banking and another for corporate

banking) that were managed centrally. Staff and managers could access the information

through their PCs and laptops. Centralised database management system complemented the

security system by bringing in authentication through a unified ID management server.

Managers and officers of the bank were able to process half a million transactions per

month in real time after the new implementation. There were significant savings in the cost

and also in the consumption of power. Now there were no problems with regard to

imbalances in the load across various network servers. Due to centralised data management,

top management could keep an eye on the functioning of various branches. Hence the cases

of fraud and cheating reduced considerably. The bank managers could also process the loan

applications in reduced time since the customer’s previous records could be accessed at the

click of the button and approval from the higher authorities could be obtained in real time.

Moreover the new system also brought in many applications that helped local managers in

the decision making process.

a. List the uses of centralized data management

b. What steps Laxmi bank need to take if it were to change its centralised database

system to a distributed database system in future?

A a. Listing the uses from the from the case

study

2

10

b. Explaining about data fragmentation,

replication and allocation techniques

6

c. Is it possible to replicate the centralised

database management model of the bank

in a manufacturing concern? Give reasons.

2

*A-Answer