MCA1040- SYSTEM ANALYSIS AND DESIGN

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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 :

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or

Call us at : 08263069601

(Prefer mailing. Call in emergency )