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ASSIGNMENT
PROGRAM
|
MCA(REVISED FALL 2012)
|
SEMESTER
|
FIRST
|
SUBJECT CODE & NAME
|
MCA1040- SYSTEM ANALYSIS AND DESIGN
|
CREDIT
|
4
|
BK ID
|
B1647
|
MAX.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.1 Describe the following:
a)
Transaction Processing Systems (TPS) b) Management Information Systems (MIS) c)
Decision Support Systems (DSS) d) Office Automation Systems (OAS)
Answer:- Transaction
Processing Systems (TPS):- Transaction processing
is a style of computing that divides work into individual, indivisible
operations, called transactions.[1] A transaction processing system (TPS) or
transaction server is a software system, or software/hardware combination, that
supports transaction processing.
Q. 2
Define attributes. What are the two attribute classifications? Explain about
properties and characteristics.
Answer:- Attributes:- In computing, an attribute is a specification that defines a
property of an object, element, or file. It may also refer to or set the
specific value for a given instance of such. For clarity, attributes should
more correctly be considered metadata. An attribute is frequently and generally
a property of a property. However, in actual usage, the term
Q. 3 Differentiate between
logical entity relationship and physical entity relationship.
Answer: - Logical modeling deals with gathering business requirements and
converting those requirements into a model. The logical model revolves around
the needs of the business, not the database, although the needs of the business
are used to establish the needs of the database. Logical modeling involves
gathering information about business processes, business entities (categories
of data), and organizational units. After this information is gathered,
diagrams and reports are produced including entity relationship diagrams,
business
Q.4 Write short notes on:
a. Data Dictionary
b.
Data Element
c. Data Structure
d. Data Store
e.
Data Flow
Answer:- Data Dictionary:- A data dictionary, or metadata repository, as defined in the IBM
Dictionary of Computing, is a "centralized repository of information about
data such as meaning, relationships to other data, origin, usage, and
format."[1] The term can have one of several closely related meanings
pertaining to databases and database management systems (DBMS):
Data Element:-Data elements usage can be discovered by inspection of software
applications or application data files through a process of manual or automated
Application Discovery and Understanding. Once data elements are discovered they
can be registered in a metadata registry.
In
Data Structure: - In computer science, a data structure is a particular way of
organizing data in a computer so that it can be used efficiently.
Data Store: - A data store is a data repository of a set of integrated objects.
These objects are modeled using classes defined in database schemas.[1] Data
store includes not only data repositories like databases, it is a more general
concept that includes also flat files that can store data.
Some data stores do
represent data in only one schema, while other data stores use several schemas
for this task. An example is RDBMS-based data stores like MySQL or PostgreSQL.
Data Flow: - Dataflow is a software architecture based on the idea that changing
the value of a variable should automatically force recalculation of the values
of variables which depend on its value.
Q. 5
What are the different types of methods used for the training of operators and
users? Discuss.
Answer:- Training is a set of a systematic processes designed to meet
learning objectives related to trainees' current or future jobs. These
processes can be grouped into the following phases; needs analysis, design,
development, implementation, and evaluation. The phases are sequential, with
the outputs of the previous phases providing the inputs to those that follow.
Figure 1 depicts the phases and their relationships. Training delivery methods
consist of the techniques and materials used by trainers to structure learning
experiences. Different training
Q6 Explain the concept of
inheritance and polymorphism with example.
Answer:- Inheritance.:-Inheritance
concept in OOP allows us to create a new class using an existing one. It also
allows the new class to add its own functionality. This concept can also be
related to real world entity. A bike manufacturer uses same mechanism of
existing version of the bike while launching a new version with some added
functionalities. This allows him to save time and efforts. In object-oriented
programming (OOP), inheritance is when an object or class is based on another
object or class, using the same implementation (inheriting from a class) or
specifying implementation to maintain the same behavior (realizing an
interface; inheriting behavior
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 )
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