Systems Analysis and Design

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Systems Analysis and Design IT 1402
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Systems Analysisand Design
Major Changes done to the Syllabus
IT 1402
IT 1401
Old Syllabus
New Syllabus
Vs
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TOPICS
1. Introduction to Information System
Environment 2. System Development Life Cycle
(SDLC) 3. Problem Definition

Newly added
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Problem Definition

• Finding problems to solve
• Feasibility Study
• Cost Benefit Analysis
• System Proposals

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TOPICS

• 4. Requirements Analysis
• 5. Modeling Methods
• 6. System Design
• 7. Project Management and Documentation
• 8. Automated Tools and Technology

Newly added
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Automated Tools and Technology

• Forward and Reverse Engineering
• Project Management Tools
• Application Development Environment

Topic Title Changed
New Sub Topics
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• Intro. to Object Modeling and Object Development
  methods

Removed from the Syllabus

• Separate Module in the 2nd Year
• Introduced in Modeling Methods
• Section

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Books Recommended for Reading

• Main Reading Reference 1
• - Systems Analysis and Design Methods by Jeffrey
  L. Whitten, Lonnie D. Bentey, Kevin C.Dittman,
  5th edition, ISBN 0-07-044539-7, Tata
  McGraw-Hill, 2001.

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Books Recommended for Reading

• Main Reading Reference 1
• Introduction to Systems Analysis and Design by
  Igor Hawryszkiewycz, 4th edition, Prentice-Hall,
  1998

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Books Recommended for Reading

• Supplementary Reading
• Ref3- Practical SSADM ver 4 A Complete
  Tutorial Guide by Philip L Weaver, Pitman
  publishing, 1995.
• An Introduction to Systems Analysis Techniques by
  Mark Lejk, David Deeks, Prentice Hall, 1998.
• System Analysis and Design by Don Yeates, Maura
  Shields and David Helmy, Longman group limitted,
  1994.

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Use the notations given in the 1st Reference
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Uses Different Notations
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System Development Life Cycle
Problem Definition
Maintenance
Requirement Analysis
System Testing
System Design
System Development
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Recommended Links

• http//www.mhhe.com/whitten
• http//cse.ucsc.edu

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Development Process

• Methodology
• Modeling Methods or Techniques
• Tools

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Methodology

• Provides the framework for systems Development
• Has a predefined set of steps
• Ensures that systems are built in the most
  effective way

e.g. SSADM, RUP
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Modeling Methods

• A set of techniques used to implement a
  Methodology
• Data Flow Diagrams
• Entity Relationship Diagrams
• Structure Charts etc.

Different Views of the System
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Tools

• Software systems
• Assists analysts and designer to build
  information system.

e.g. Easy Case, Rational Rose
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Data Flow Diagrams

• Symbols
• Yourdon/Demarco Gane Sarson

Process or Business function
Function carried out by the business ,which
transforms or uses data.
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Data Flow Diagrams
Yourdon/Demarco Gane and Sarson
External Entity
Data Flows origin or destination which is
outside the business area being modeled. Some
times called Source or Sinks
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Data Flow Diagrams
Yourdon/Demarco Gane and Sarson
Data Flow
Arrow indicates direction of data flow.Represents
single data elements or simple structures like
records
Data Store
Data at rest. Files, complex data structures or
sets of data.
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Data Flow Diagram using Gane Sarson Symbols
1 Verify A/C Balance
Account Holder
Valid Balance
Withdrawal Acknowledge
Cheque/Withdrawal Slip
Current Balance
2 Debit Withdrawal Amount
New Balance
Account Holder
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Object Oriented Methodologies

• Standard Set of Notations
• UML has 9 Diagrams
• Covered
• In a 2nd year Module