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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
(Prefer mailing. Call in emergency )
ASSIGNMENT
DRIVE FALL 2016
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. Define Database and Database Management System
(DBMS). Briefly explain the important properties of database.
Answer: A database management system (DBMS) is system software for creating and managing
databases. The DBMS provides users and programmers with a systematic way to create, retrieve,
update and manage data.
A DBMS makes it possible for end users to create, read, update and delete data in a database. The
DBMS essentially serves as an interface between the database and end users or application
programs, ensuring that data is consistently organized and remains easily accessible.
The DBMS manages three important things: the data, the database engine that allows data to be
accessed, locked and modified -- and the database
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 buildinginformationsystemsand systems information management that originated in

2. the 1970s. It proposes three different views in systems development, with conceptual modelling
being considered the key to achieving data integration.
The three-schemaapproachoffersthree typesof schemaswithschematechniques based on formal
language descriptions:
Question. 3. a. Define SQL
Answer: Structured Query Language (SQL) is a standard computer language for relational database
management and data manipulation. SQL is used to query, insert, update and modify data. Most
relational databasessupportSQL, which is an added benefit for database administrators (DBAs), as
they are often required to support databases across several different platforms.
First developed in the early 1970s at IBM
b. Explain the different types of SQL statements
Answer: Types of SQL Statements: The tables in the following sections provide a functional
summary of SQL statements and are divided into these categories:
 Data Definition Language (DDL) Statements
 Data Manipulation Language (DML) Statements
 Transaction Control Statements
 Session Control Statements
Question. 4. a. Define Distributed Database Management System
(DDBMS).
Answer: A DDBMS (distributed database management system) is a centralized application that
manages a distributed database as if it were all stored on the same computer. The DDBMS
synchronizesall the dataperiodically, andincaseswhere multiple users must access the same data,
ensures that updates and deletes performed on the data at one location will be automatically
reflected in the data stored elsewhere.
b. Elaborate advantages and disadvantages of distributed database
management system.
Answer: Advantages

3.  Management of distributed data with different levels of transparency like network
transparency, fragmentation transparency, replication transparency, etc.
 Increase reliability and availability
 Easier expansion
 Reflects organizational structure — database fragments potentially stored within the
departments they relate to

Question. 5. Define client–server model. Briefly explain the
advantages of client–server model.
Answer: A client-servernetworkisdesignedforend-users,calledclients,toaccess resources such as
files, songs, video collections, or some other service from a central computer called a server. A
server'ssole purpose istodowhat itsname implies - serve itsclients! You may have been using this
configurationandnoteven have known it. Have you ever played Xbox Live or used the PlayStation
Network? Your Xbox One is the client, and when it
Question. 6. Briefly explain the basic concepts of object-oriented
data model.
Answer: Imagine we have to design database for college. What is the real world entities involved
withcollege?Theyare college,Students, Lecturer, Course, Subject, Marks etc. Once all the entities
are listed, we find out the relationship between
Dear students get fully solved assignments
Send your semester & Specialization name to our mail id :
“ help.mbaassignments@gmail.com ”
or
Call us at : 08263069601
(Prefer mailing. Call in emergency )