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PROGRAM: MCA (REVISED FALL 2012)
SEMESTER: FIRST
SUBJECT CODE & NAME: MCA1040- SYSTEM ANALYSIS AND DESIGN
CREDIT: 4
BK ID: B1647
MAX. MARKS: 60
Q.1: List different types of Systems. Compare Physical or abstract systems and Open or closed systems.
ANS:
There are different types of system. These can be categorised in many ways.
· Physical or abstract systems
· Open or closed systems
Q.2: Define attributes. What are the two attribute classifications? Explain about properties and characteristics.
ANS:
Attributes:
The term ‘Attributes’ stands for functional or physical traits of a system.System attributes are considered as the supposed qualities of the system.Some examples of attributes are temperature, location, state,
Q.3: Explain the concept of Analysis and Design in system development life cycle.
ANS:
System development is quite a challenging and difficult task. In developing abig integrated system, like MIS, a lot of people are involved and severalmonths or even years are devoted for completion. But, a small autonomousapplication, like payroll, can be generated in a number of weeks or monthsby a single
Q.4: Write short notes on:
a. Data Dictionary
b. Data Element
c. Data Structure
d. Data Store
e. Data Flow
ANS:
Data Dictionary:
A catalogue comprising all data elements, data structures and processes depicted in logical DFDs is
Q.5: What are the different types of methods used for the training of operators and users? Discuss.
ANS:
There are different methods for organising training of operators and users. Most significant among them are as follows:
Q.6:Explain the concept of inheritance and polymorphism with example.
ANS:
Concept of inheritance:
Inheritance is defined as a method in which the subclass inherits the properties and attributes of a class. In the process of inheritance the subclasses can be refined by adding some new attributes and functionality.
A lot of repetitive coding is there when numerous different classes supporting the same protocol are executed. Inheritance permits the sharing of the implementation of operations to most of the object-oriented systems instead of duplicate code in different classes. By means of inheritance, one class can be
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