1. E-R Model Case Studies
1 : Suppose you are given the following requirements for a simple database for the
National Hockey League (NHL):
the NHL has many teams,
each team has a name, a city, a coach, a captain, and a set of players,
each player belongs to only one team,
each player has a name, a position (such as left wing or goalie), a skill level, and
a set of injury records,
a team captain is also a player,
a game is played between two teams (referred to as host_team and guest_team)
and has a date (such as May 11th, 1999) and a score (such as 4 to 2).
Construct a clean and concise ER diagram for the NHL database.
2: A university registrar’s office maintains data about the following entities:
1. courses, including number, title, credits, syllabus, and prerequisites;
2. course offerings, including course number, year, semester, section number,
instructor(s), timings, and classroom;
3. students, including student-id, name, and program;
4. instructors, including identi-cation number, name, department, and title.
Further, the enrollment of students in courses and grades awarded to students in each course they
are enrolled for must be appropriately modeled. Construct an E-R diagram for the registrar’s
of-ce.Document all assumptions that you make about the mapping constraints.
2. Answer :
(a) Construct an E-R diagram for a car-insurance company whose customers own one or more
cars each. Each car has associated with it zero to any number of recorded accidents.
(b) Construct appropriate tables for the above ER Diagram ?
3. Car insurance tables:
person (driver-id, name, address)
car (license, year,model)
accident (report-number, date, location)
participated(driver-id, license, report-number, damage-amount)
(a) Construct an E-R diagram for a hospital with a set of patients and a set of medical doctors.
Associate with each patient a log of the various tests and examinations conducted.
(b) Construct appropriate tables for the above ER Diagram :
Patient(SS#, name, insurance)
Physician ( name, specialization)
4. Test-log( SS#, test-name, date, time)
Doctor-patient (physician-name, SS#)
Patient-history(SS#, test-name, date)
5: Consider a database used to record the marks that students get in different exams of different
a) Construct an E-R diagram that models exams as entities, and uses a ternary relationship, for
the above database.
Answer a :
b) Construct an alternative E-R diagram that uses only a binary relationship between students
and course-offerings. Make sure that only one relationship exists between a particular student
and course-offering pair, yet you can represent the marks that a student gets in different exams of
a course offering.
5. 6: Design an E-R diagram for keeping track of the exploits of your favorite sports team. You
should store the matches played, the scores in each match, the players in each match and
individual player statistics for each match. Summary statistics should be modeled as derived
7 :Extend the E-R diagram of the previous question to track the same information for all teams in
6. 8 : Draw the E-R diagram which models an online bookstore.
7. 9 : Consider a university database for the scheduling of classrooms for -final exams. This
database could be modeled as the single entity set exam, with attributes course-name, section-
number, room-number, and time. Alternatively, one or more additional entity sets could be
defined, along with relationship sets to replace some of the attributes of the exam entity set, as
course with attributes name, department, and c-number
section with attributes s-number and enrollment, and dependent as a
weak entity set on course
room with attributes r-number, capacity, and building
Show an E-R diagram illustrating the use of all three additional entity sets listed.
8. 10 : Construct an ER Diagram for Company having following details :
Company organized into DEPARTMENT. Each department has unique name
and a particular employee who manages the department. Start date for the manager is
recorded. Department may have several locations.
A department controls a number of PROJECT. Projects have a unique name,
number and a single location.
Company’s EMPLOYEE name, ssno, address, salary, sex and birth date
are recorded. An employee is assigned to one department, but may work for several
projects (not necessarily controlled by her dept). Number of
hours/week an employee works on each project is recorded; The immediate supervisor
for the employee.
Employee’s DEPENDENT are tracked for health insurance purposes (dependent
name, birthdate, relationship to employee).
10. Application of Business Intelligence in
ZARA is a Spanish clothing and accessories retailer based in Arteixo, Galicia. Founded in 24 May
,1975 by Amancio Ortega and Rosalía Mera, the brand is renowned for it’s ability to deliver new
clothes to stores quickly and in small batches. Zara needs just two weeks to develop a new
product and get it to stores, compared to the six-month industry average, and launches around
10,000 new designs each year. Zara was described by Louis Vuitton Fashion Director Daniel
Piette as “possibly the most innovative and devastating retailer in the world. The company
produces about 450 million items a year for its 1,770 stores in 86 countries.
The Zara has made of use of Information Systems (IS) and to advance in many areas. This has
resulted in huge success for the company. This included application of Business intelligence (BI)
involves technologies, practices for collection, integration and applications to analyze and
present business information. The main aim of business intelligence is to promote better
business decision making.
BI describes a group of information on concepts and methods to better decision making in
business. This is achieved by employing a fact based support systems. The intelligence systems
are data-driven and sometimes used in executive information systems. Predictive views on
business operations can be provided by use of BI systems. predictive views on business
operations can be provided by use of BI systems since historical and current data has been
gathered into a data bank performance management benchmarking is done whereby
information on other companies in the same industry is gathered.
Since the Zara’s have large network and therefore dealing with large volumes of data, an
enterprise information system has been employed in the firm. This is generally a type of
computing systems that involves an enterprise class that is, typically offering total quality
service handling large volumes of data and able to sustain a big organization. With this system,
a technology platform is provided which enables the enterprise is provided to that information
can be shared in all useful levels of management enterprise systems are important in removing
the problem of fragmentation of information. This happens when there are numerous
11. information systems in an enterprise. The problem is solved by developing a standard data
The Zara being big organization, the enterprise systems is housed in many different data
centers, and includes content management system as the main application. The Zara team
comprises technology professionals. These include content specialists, network and system
engineers, flash developers, database business analysts and administrators, software
developers, quality assurance managers and computer and applications support technicians.
All these specialists work in tandem to bring about competitive advantage to business by
allowing for quick-response capability.
The Zara is devoted to integrating information technology appropriately into all areas of its
operations and activities. The range of services and resources available to its clients is
attributed to the commitment of integration of IT properly in the organization. The client
services group in the Zara partners with staff and clients to identify and meet each group’s
technological requirements. This group of technical advisors associates with departments to
execute a roadmap for a team’s technological vision and then defines this vision within entity
Much support is required for invariable innovation. The Zara IT group is devoted to developing
community through technology and operates closely with business associates. The IT group is
devoted to developing community through technology and operates closely with business
associates. The IT group has technical support and tools they require to come up with new
ideas and spread the ideas to the wider community worldwide. This ensures that client needs
are realized. A constantly growing state-of-the-art technology infrastructure has enabled the
firm to develop and maintain a fully integrated organization/ enterprise. The infrastructure has
enabled the firm to develop and maintain a fully integrated organization/ enterprise. The
infrastructure entails a core of systems and attempts designed to produce the flexibility and
capacity for innovation and growth.
The Zara thrives in an environment of change, experimentation and learning that is spreading
over the boundaries for the application of IT in their business in the enterprises an easy-to-use
12. modular tools, templates and platforms that involve all sides of life at the Zara firms including
career development , administration and operations are implemented and developed.
In the Zara other web-based solutions are deployed with an advance knowledge management
thereby making a big shift in the quality and speed of work in how the enterprises function. In
the exploding growth of the software market a new world growth for the software market a
new world of connectivity is realized in the Zara. The urgency of the business recognizing the
importance of corporate portal has enabled linkage of information, data, people and
knowledge to provide business solutions. The corporate portals come from consumer portals
like Alta-vista, yahoo! and Lycos.
The portals (gateways) show the importance of letting clients have a wide scope of varied
information on the web. This has given rise to the increase in multitasking, receiving
information and checking from varied sources and thereby getting involved in projects that
cross geographical boundaries with this technology the needs of the community, employees
and even the extended network that is more advanced are served.
The Zara is possibly the most devastating and innovative retailer in the world. With more than
1000 shops world wide, the Zara has turned controlled over garment factories into a
competitive advantage by making and designing the garments. By making the garments itself, it
can quickly react to varying market trends. The Zara has been able to succeed in building a
massive brand, without promotion or advertising but through the information systems and
13. University of Pune |M.Com Part II Semester IV 1
M.Com. - Part II
Subject -: CASE STUDY
Objective of the paper -
1) To study the application of theory of marketing management in
2) To Develop the Problem solving capabilities.
3) To enhance the analytical ability.
Meaning of the Case Study -
'A chunk of reality brought to the classroom for further Analysis'
This paper will be divided in to two parts. Part - for confirming
theoretical background about case study it consists of -
a) Meaning and definition of case study.
b) Purpose of case study.
c) Types of cases.
d) Benefits and limitations of case study.
e) Steps in solving case study
f) Various approaches to case study
g) Case study as a tool of marketing research.
Part - will be based on practical cases on the topics related to issues based
on marketing areas.
Part - carry 25 marks and Part - 75 marks.
In the examination some practical and contemporary cases and case
lets based on marketing will be asked. Some cases based on applied area in
marketing and other on theoretical bases. Following are some of the sample
cases and case lets for reference.
14. University of Pune |M.Com Part II Semester IV 2
Case No. - 1
CONSUMER RESEARCH ON HORLICKS
It's a brand that's been growing steadily over the years. And increasing
the audience that it addresses as well. The new ad campaign of the Rs. 600
crore Horlicks brand is just hitting national networks and the message is clear,
'many things to many people. Although Horlicks features in the top 10 of most
consumer surveys this is one of its highest ratings so far. Says Simons J.
Scarf, managing director, Smith Kline Beecham Consumer Healthcare
(SBCH), "We are delighted at the rating that Horlicks has got in the ET survey.
We're obviously aware of the power of Horlicks through our closeness to
consumers, but it is always nice to get independent acknowledgement of the