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1. Dear students get fully solved assignments
Send your semester & Specialization name to our mail id :
help.mbaassignments@gmail.com
or
call us at : 08263069601
ASSIGNMENT
DRIVE FALL 2017
PROGRAM MASTER OF BUSINESS ADMINISTRATION (MBA)
SEMESTER III
SUBJECT CODE & NAME MI0034 – DATABASE MANAGEMENT SYSTEM
BK ID B1966
CREDITS 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.
Question. 1. What is Database Management System (DBMS)? Briefly
explain the different components of DBMS.
Answer: Organizations employDatabase Management Systems(or DBMS) to helpthemeffectively
manage theirdataand derive relevantinformationoutof it.A DBMS isa technologytool thatdirectly
supports data management. It is a package designed to define, manipulate, and manage data in a
database.
Some general functions of a DBMS:
Question. 2. With a neat diagram explain the concept of three-
schema architecture.
Answer: The three-schema approach, or three-schema concept, in software engineering is an
approach to building information systems and systems information management that originatedin
the 1970s. It proposesthree differentviewsinsystems development,withconceptualmodellingbeing
considered the key to achieving data integration.
Question. 3. a. Define SQL
Answer:SQL isadomain-specificlanguageusedinprogramminganddesignedformanagingdataheld
in a relational database management system(RDBMS), or for stream processing in a relational data
stream management system (RDSMS).

2. Originallybaseduponrelationalalgebraandtuple relationalcalculus,SQLconsistsof adatadefinition
language, data manipulationlanguage, and data control language. The scope of SQL includes data
insert,query,update anddelete,schemacreationandmodification,anddataaccesscontrol.Although
SQL is often described as, and to a great extent is, a declarative language (4GL), it also includes
procedural elements.
b. Explain the different types of SQL statements
Answer:SQL isa verypowerfulanddiversedatabaselanguageuse tostoringdataintodatabases.SQL
is loosely typed language so you can learn easily.
In this SQL tutorial, we use command line examples to know about executing speedof SQL. It's take
very bit of time for executing and retrieving result.
SQL is a greater tool with web languages such as PHP,
Question. 4. a. Define Distributed Database Management System
(DDBMS).
Answer: A distributed database is a database in which storage devices are not all attached to a
commonprocessor.It may be storedin multiplecomputers,locatedinthe same physical location;or
may be dispersedoveranetworkof interconnectedcomputers.Unlike parallel systems,inwhichthe
processorsare tightlycoupledandconstituteasingle databasesystem, adistributeddatabase system
consists of loosely coupled sites that share no physical components.
b. Elaborate advantages and disadvantages of distributed database
management system.
Answer: In a distributeddatabase,dataisstoredindifferentsystemsacrossa network.ForExample,
in mainframes, personal computers, laptops, cell phones, etc.
Advantages of distributed database:
1) In a distributed database,datacanbe storedindifferentsystemslikepersonalcomputers,servers,
mainframes, etc.
Question. 5. Define client–server model. Briefly explain the
advantages of client–server model.
Answer: The client–server model is a distributed application structure that partitions tasks or
workloads between the providers of a resource or service, called servers, and service requesters,
calledclients.Oftenclientsandserverscommunicate overacomputernetworkonseparatehardware,

3. but both client and server may reside in the same system. A server host runs one or more server
programs which share their resources with clients. A client does not share any of its resources, but
requests a server's content or service function. Clients therefore
Question. 6. Briefly explain the basic concepts of object-oriented
data model.
Answer:Imagine we have todesigndatabaseforcollege.Whatisthe real worldentitiesinvolvedwith
college? They are college, Students, Lecturer, Course, Subject, Marks etc. Once all the entities are
listed,we findoutthe relationshipbetweenthemandtrytomapall of them.Alsowe listwhatare the
attributes related to each entity like student id, name, lecturer name, course that he is teaching,
different subjects, pass mark, grade levels etc. Here we are not
Dear students get fully solved assignments
Send your semester & Specialization name to our mail id :
help.mbaassignments@gmail.com
or
call us at : 08263069601