The document discusses key aspects of business systems analysis using the Unified Modeling Language (UML). It describes two aspects of UML - static structure and dynamic behavior. It then discusses various UML diagrams that can be used, including use case diagrams, class diagrams, sequence diagrams, and state diagrams. The document also covers UML specifications, adornments, common divisions, and extensibility mechanisms.

1. Business Systems Analysis
Overview Part II
by Vinil Gupta

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Two aspect of UML
 Static Structure
 Dynamic Behaviour

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UML Diagrams Overview

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Use Cases
Use Cases, Business Use Cases, Systems
Use Cases – OOAD
 Use Case ID
 Use Case Description
 Pre and Post Conditions
 Assumptions
 Main flow or Basic Flow
 Alternate Flows
 Exception Flows
 Business Rules
 Issues and Risks

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Object Constraint Language (OCL)
 OCL is used for applying constraints
and business rules.

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Unified Modelling Language (UML)
 OOAD
 Project Scope – user goals and system
interaction
 Use Case Diagram – Actors, Uses, Extends
 Class Diagram – Business Object Models
 Associations, Attributes, Operations,
Generalization, Constraint Rules, Aggregation
and Composition

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Unified Modelling Language (UML)
 Sequence Diagram
 Collaboration Diagrams
 Package Diagrams
 State Diagrams
 Activity Diagrams
 Deployment Diagrams

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UML: Associations
 Description of a set of link
between objects
 A change to a thing affects
the semantics of a dependent
thing
 One element is a
specialisation of another;
substituted more general
element
 One classifier specifies a
contract that the other
classifier guarantees to carry
out

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UML Common Mechanism
UML has four common mechanism
1. Specifications
2. Adornments
3. Common divisions
4. Extensibility mechanism

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1.Specification
Specifications are the meat of the UML model.
They provide the semantic backplane of
the model. UML model has at least two
dimensions
1. Graphic dimensions – diagram
2. Textural dimensions – specifications
textual descriptions of the semantics of an
element

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1.Specification
UML models may be:
 Elided – some elements from diagrams to
simplify the view
 Incomplete – some elements may be
missing entirely
 Inconsistent – model may contain
contradictions

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Questions and Answers