System Analysis and Design-System, analysis and design is a methodology applied in computer system to develop a new system

System, analysis and design is a methodology applied in computer system to develop a new system

System Analysis and Design

System, analysis and design is a methodology applied in computer system to develop a new system

A brief summary

System, analysis and design is a methodology applied in computer system to develop a new system or to enhance a given system which can solve a given problem, for example, developing software to process salary of employees. System analysis refers to understanding the present system, future requirement and defining solution to meet the user’s requirement within constraints and timeframe. Designing deals with the final solution approach to a given problem. It aims at telling how the input will flow to give a specific output. Thus, system analysis and design is a whole process of analyzing a given system, defining problems, defining the system specification, providing best feasible solution to a given problem and maintenance of the proposed system with day to day future developments.


In short, System Analysis and Design (SAD), mainly deals with the software development activities. Success of any system depends on good SAD.

Instructor:

NPTEL

What you will learn

Introduction to System Analysis and Design

Designing a System

Analysing a System

Course Fee: Free

Certification By: Millionlights

Data and Information, Systems Analysis and Design Life Cycle, Information gathering

Data and Information – Types of information: operational, tactical, strategic and statutory – why do we need information systems – management structure – requirements of information at different levels of management – functional allocation of management – requirements of information for various functions – qualities of information – small case study , Systems Analysis and Design Life Cycle: Requirements determination – requirements specifications – feasibility analysis – final specifications – hardware and software study – system design – system implementation – system evaluation – system modification. Role of systems analyst – attributes of a systems analyst – tools used in system analysis , Information gathering – strategies – methods – case study – documenting study – system requirements specification – from narratives of requirements to classification of requirements as strategic, tactical, operational and statutory. Example case study

Feasibility analysis, Tools for systems analysts, Structured systems analysis and design

Feasibility analysis – deciding project goals – examining alternative solutions – cost – benefit analysis – quantifications of costs and benefits – payback period – system proposal preparation for managements – parts and documentation of a proposal – tools for prototype creation, Tools for systems analysts – data flow diagrams – case study for use of DFD, good conventions – leveling of DFDs – leveling rules – logical and physical DFDs – software tools to create DFDs, Structured systems analysis and design – procedure specifications in structured English – examples and cases – decision tables for complex logical specifications – specification oriented design vs procedure oriented design

Data oriented systems design, Data input methods, Designing outputs

Data oriented systems design – entity relationship model – E-R diagrams – relationships cardinality and participation – normalizing relations – various normal forms and their need – some examples of relational data base design, Data input methods – coding techniques – requirements of coding schemes – error detection of codes – validating input data – input data controls interactive data input, Designing outputs – output devices – designing output reports – screen design – graphical user interfaces – interactive I/O on terminals.

Object oriented systems modeling, Control – audit and security of information systems , Systems analysis and design in the era of electronic commerce

Object oriented systems modeling – what are objects? – why objects? – objects and their properties – classes – inheritance – polymorphism – how to identify objects in an application – how to model systems using objects – some cases of object oriented system modeling , Control – audit and security of information systems – why controls are needed – objectives of control – techniques used in control – auditing information systems – auditing around, through and with the computer – testing information systems – types of tests – how to generate tests – security of information systems – disaster recovery – business process continuity, Systems analysis and design in the era of electronic commerce – B2B, B2C and C2C e-commerce – advantages and disadvantages of e-commerce. E-commerce system architecture – physical networks, logical network, world wide web, web-services – html, XML.

Electronic data interchange, Security of e-commerce transactions, firewalls, Payment systems in e-commerce, Complete system analysis and design case studies

Electronic data interchange – EDI standards – virtual private networks – XML and EDI., Security of e-commerce transactions, firewalls – encryption methods – symmetric and asymmetric encryption – digital signature – certifying authorities for signatures – legal status of e-commerce transactions , Payment systems in e-commerce – cheque payment, credit card payments, e-cash payments. , Complete system analysis and design case studies – a system for journal acquisition in libraries – walk through the entire life cycle

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