Lecture 21 
Lecture 21
by IISc / V. Rajaraman
Video Lecture 21 of 40
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Views: 1,309
Date Added: July 15, 2011

Lecture Description

This video lecture, part of the series System Analysis and Design by Prof. V. Rajaraman, does not currently have a detailed description and video lecture title. If you have watched this lecture and know what it is about, particularly what Computer Science topics are discussed, please help us by commenting on this video with your suggested description and title. Many thanks from,

- The CosmoLearning Team

Course Index

Course Description

In this course, Prof. V. Rajaraman gives 40 video lectures on System Analysis and Design.

Module 1
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 (3 lectures)
Module 2
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 (3 lectures)
Module 3
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 (3 lectures)
Module 4
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 (3 lectures)
Module 5
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 (3 lectures).
Module 6
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 (3 lectures)
Module 7
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. (3 lectures)
Module 8
Data input methods – coding techniques – requirements of coding schemes – error detection of codes – validating input data – input data controls interactive data input (3 lectures)
Module 9
Designing outputs – output devices – designing output reports – screen design – graphical user interfaces – interactive I/O on terminals. (2 lectures)
Module 10
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 (4 lectures)
Module 11
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 (4 lectures).
Module 12
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. (3 lectures)
Module 13
Electronic data interchange – EDI standards – virtual private networks – XML and EDI. (2 lectures).
Module 14
Security of e-commerce transactions, firewalls – encryption methods – symmetric and asymmetric encryption – digital signature – certifying authorities for signatures – legal status of e-commerce transactions (3 lectures)
Module 15
Payment systems in e-commerce – cheque payment, credit card payments, e-cash payments. (2 lectures).
Module 16
Complete system analysis and design case studies – a system for journal acquisition in libraries – walk through the entire life cycle (5 lectures)


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