system analysis and design book in hindi pdf

System analysis and design book in hindi pdf

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Some notes of System Analysis and Design are as follows.

System Analysis And Design.pdf

Difference Between system Analysis and Design


Systems development is systematic process which includes phases such as planning, analysis, design, deployment, and maintenance. It is a process of collecting and interpreting facts, identifying the problems, and decomposition of a system into its components.

View previous version. Delivery Mode: Individualized study online with eTextbook. Faculty: Faculty of Science and Technology. Centre: School of Computing and Information Systems.

Some notes of System Analysis and Design are as follows.

Systems development is systematic process which includes phases such as planning, analysis, design, deployment, and maintenance. It is a process of collecting and interpreting facts, identifying the problems, and decomposition of a system into its components.

System analysis is conducted for the purpose of studying a system or its parts in order to identify its objectives. It is a problem solving technique that improves the system and ensures that all the components of the system work efficiently to accomplish their purpose.

It is a process of planning a new business system or replacing an existing system by defining its components or modules to satisfy the specific requirements. Before planning, you need to understand the old system thoroughly and determine how computers can best be used in order to operate efficiently. The word System is derived from Greek word Systema, which means an organized relationship between any set of components to achieve some common cause or objective. A system must have some structure and behavior which is designed to achieve a predefined objective.

The objectives of the organization have a higher priority than the objectives of its subsystems. For example, traffic management system, payroll system, automatic library system, human resources information system. Organization implies structure and order. It is the arrangement of components that helps to achieve predetermined objectives. For example, in an organization, purchasing department must interact with production department and payroll with personnel department.

Interdependence means how the components of a system depend on one another. For proper functioning, the components are coordinated and linked together according to a specified plan.

The output of one subsystem is the required by other subsystem as input. Integration is concerned with how a system components are connected together. It means that the parts of the system work together within the system even if each part performs a unique function.

The objective of system must be central. It may be real or stated. It is not uncommon for an organization to state an objective and operate to achieve another. The users must know the main objective of a computer application early in the analysis for a successful design and conversion. The processor is the element of a system that involves the actual transformation of input into output.

It is the operational component of a system. Processors may modify the input either totally or partially, depending on the output specification.

As the output specifications change, so does the processing. In some cases, input is also modified to enable the processor for handling the transformation. It is the decision—making subsystem that controls the pattern of activities governing input, processing, and output. The behavior of a computer System is controlled by the Operating System and software. In order to keep system in balance, what and how much input is needed is determined by Output Specifications.

Negative feedback is informational in nature that provides the controller with information for action. It determines how a system must function. A system should be defined by its boundaries. Boundaries are the limits that identify its components, processes, and interrelationship when it interfaces with another system.

The knowledge of the boundaries of a given system is crucial in determining the nature of its interface with other systems for successful design. Physical System may be static or dynamic in nature. For example, desks and chairs are the physical parts of computer center which are static. A programmed computer is a dynamic system in which programs, data, and applications can change according to the user's needs.

Abstract systems are non-physical entities or conceptual that may be formulas, representation or model of a real system. An open system must interact with its environment. It receives inputs from and delivers outputs to the outside of the system. For example, an information system which must adapt to the changing environmental conditions.

A closed system does not interact with its environment. It is isolated from environmental influences. A completely closed system is rare in reality. Adaptive System responds to the change in the environment in a way to improve their performance and to survive.

For example, human beings, animals. Non Adaptive System is the system which does not respond to the environment. For example, machines. Temporary System is made for specified time and after that they are demolished. For example, A DJ system is set up for a program and it is dissembled after the program.

Deterministic system operates in a predictable manner and the interaction between system components is known with certainty. For example, two molecules of hydrogen and one molecule of oxygen makes water. Probabilistic System shows uncertain behavior. The exact output is not known. For example, Weather forecasting, mail delivery. In Human-Machine System, both human and machines are involved to perform a particular task. For example, Computer programming. Machine System is where human interference is neglected.

All the tasks are performed by the machine. For example, an autonomous robot. It is an interconnected set of information resources to manage data for particular organization, under Direct Management Control DMC. This system includes hardware, software, communication, data, and application for producing information according to the need of an organization. For example, automatic library system, railway reservation system, banking system, etc. A flow system model shows the orderly flow of the material, energy, and information that hold the system together.

Business organizations are dynamic systems. A dynamic model approximates the type of organization or application that analysts deal with. There are three categories of information related to managerial levels and the decision managers make. This information is required by topmost management for long range planning policies for next few years. For example, trends in revenues, financial investment, and human resources, and population growth.

This type of Information is required by middle management for short and intermediate range planning which is in terms of months. For example, sales analysis, cash flow projection, and annual financial statements. This type of information is required by low management for daily and short term planning to enforce day-to-day operational activities. For example, keeping employee attendance records, overdue purchase orders, and current stocks available.

An effective System Development Life Cycle SDLC should result in a high quality system that meets customer expectations, reaches completion within time and cost evaluations, and works effectively and efficiently in the current and planned Information Technology infrastructure. System Development Life Cycle SDLC is a conceptual model which includes policies and procedures for developing or altering systems throughout their life cycles.

SDLC is used by analysts to develop an information system. Systems Development Life Cycle is a systematic approach which explicitly breaks down the work into phases that are required to implement either new or modified Information System.

A Software Requirement Specification SRS document, which specifies the software, hardware, functional, and network requirements of the system is prepared at the end of this phase. Transform the SRS document into logical structure, which contains detailed and complete set of specifications that can be implemented in a programming language. Review the proposed design. Ensure that the final design must meet the requirements stated in SRS document. A test report which contains errors is prepared through test plan that includes test related tasks such as test case generation, testing criteria, and resource allocation for testing.

Include all the activities such as phone support or physical on-site support for users that is required once the system is installing. Implement the changes that software might undergo over a period of time, or implement any new requirements after the software is deployed at the customer location. It also includes handling the residual errors and resolve any issues that may exist in the system even after the testing phase.

Maintenance and support may be needed for a longer time for large systems and for a short time for smaller systems. The following diagram shows the complete life cycle of the system during analysis and design phase. The system analyst is a person who is thoroughly aware of the system and guides the system development project by giving proper directions.

He is an expert having technical and interpersonal skills to carry out development tasks required at each phase. Suggests many flexible alternative solutions, pick the best solution, and quantify cost and benefits. Draw certain specifications which are easily understood by users and programmer in precise and detailed form.

Plan the periodicity for evaluation after it has been used for some time, and modify the system as needed. A requirement is a vital feature of a new system which may include processing or capturing of data, controlling the activities of business, producing information and supporting the management. Requirements determination involves studying the existing system and gathering details to find out what are the requirements, how it works, and where improvements should be made.

It predicts the characteristics of system based on previous experience which include certain problems or features and requirements for a new system. It can lead to analysis of areas that would otherwise go unnoticed by inexperienced analyst. But if shortcuts are taken and bias is introduced in conducting the investigation, then requirement Anticipation can be half-baked.

It is at the heart of system analysis where analyst documenting and describing system features using fact-finding techniques, prototyping, and computer assisted tools.

System Analysis And Design.pdf

Learn why spectrum analysis is important for a variety of applications and how to measure system and device performance using a spectrum analyzer. To introduce you to spectrum analyzers, the theory of operation will be discussed. In addition, the major components inside the analyzer and why they are important will be examined. Giving basics Designing a product or a system. Giving idea about things, relationships and diagrams. Bruce Powel Douglass, Ph. System Design also focuses on methods for accomplishing the objective of the system.

A systems analyst , also known as business technology analyst, is an information technology IT professional who specializes in analyzing, designing and implementing information systems. Systems analysts assess the suitability of information systems in terms of their intended outcomes and liaise with end users, software vendors and programmers in order to achieve these outcomes. Systems analysts may serve as change agents who identify the organizational improvements needed, design systems to implement those changes, and train and motivate others to use the systems. Although they may be familiar with a variety of programming languages, operating systems, and computer hardware platforms, they do not normally involve themselves in the actual hardware or software development. They may be responsible for developing cost analysis, design considerations, staff impact amelioration, and implementation timelines. A systems analyst is typically confined to an assigned or given system and will often work in conjunction with a business analyst. These roles, although having some overlap, are not the same.

system analysis and design notes pdf in hindi - doc 01 PGDCA II Sem System AND DESIGN - System analysis and design book in hindi pdf.

Difference Between system Analysis and Design

By Priya Pedamkar. System analysis can be defined as a deep analysis of a part of the structure of a module that has been designed before. System design means to make any module or a part of the structure from scratch and build it completely without estimation. System analysis is the process that is done on the existing model or the newly created model. But in case of system design module is made from the raw data and has to build to a new structure using his own new ideas and concept.


The end product of systems analysis is systems specifications. System design uses the output from system analysis as its input. The main objective of system design is to interpret the system requirements into architectural, logical and physical designs of how the information system to be implemented. MIS Object oriented analysis and design. Prototyping is the process of building a model of a system. In terms of an information system, prototypes are employed to help system designers build an information system that intuitive and easy to manipulate for end users. Prototyping is an iterative process that is part of the analysis phase of the systems development life cycle.

System analysis and design pdf in hindi. Definition characteristics elements of system. Sunita arora head of department of computer science applica. Look at most relevant compiler design hindi pdf websites out of million at metricskey.


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