1. Sylnovie Merchant, Ph.D. MIS 161 Spring 2005
MIS 161 Systems Development Life Cycle II Lecture 4: Implementation Diagrams
Sylnovie Merchant, Ph.D MIS Spring 2005

2. Types of Implementation Diagrams
Models the physical aspects of an OO system
Models the static view
Component Diagrams
Deployment Diagrams
Sylnovie Merchant, Ph.D MIS Spring 2005

3. Sylnovie Merchant, Ph.D. MIS 161 Spring 2005
Component Diagrams
A component is a physical piece of system used during implementation
Software code
Business documents
A component diagram shows a set of components and the relationships among them
Typically maps to one or more classes, interfaces, and collaborations
Sylnovie Merchant, Ph.D MIS Spring 2005

4. Examples of Components
GUI
Software code
Source, executable, or binary
Database
Component Name
Sylnovie Merchant, Ph.D MIS Spring 2005

5. Sylnovie Merchant, Ph.D. MIS 161 Spring 2005
Dependencies
Relationships between two elements, where a change to the one element (independent element, a.k.a. client) affects the other element (dependent element, a.k.a. supplier or source)
Sylnovie Merchant, Ph.D MIS Spring 2005

6. Sylnovie Merchant, Ph.D. MIS 161 Spring 2005
Dependencies
Show who needs who
Appear as dashed-arrows on implementation diagrams
Show how components communicate with each other
Direction indicates knowledge in the communication
Sylnovie Merchant, Ph.D MIS Spring 2005

7. Simple Component Diagram
Access Database
GUI
Component
Sylnovie Merchant, Ph.D MIS Spring 2005

8. Sylnovie Merchant, Ph.D. MIS 161 Spring 2005
Interfaces
Appear as circles on implementation diagrams
Specify service offered by the component
Represent externally visible behavior of the component
Sylnovie Merchant, Ph.D MIS Spring 2005

9. Sylnovie Merchant, Ph.D. MIS 161 Spring 2005
Component Diagram
Update
Interface
Access Database
Dependency
GUI
Component
Sylnovie Merchant, Ph.D MIS Spring 2005

10. Sylnovie Merchant, Ph.D. MIS 161 Spring 2005
Deployment Diagrams
A diagram that shows a set of nodes and the associations between them.
Associations between nodes generally represent physical connections, such as those involving the Internet
Sylnovie Merchant, Ph.D MIS Spring 2005

11. What Deployment Diagrams Show
Configuration of run-time processing elements
Software components, processes, and objects that live during run time
A set of nodes and the association and dependencies among them
Sylnovie Merchant, Ph.D MIS Spring 2005

12. Sylnovie Merchant, Ph.D. MIS 161 Spring 2005
Nodes
Are usually represented by some kind of computational unit
Are typically pieces of hardware with memory and processing capability
Nodes
Sylnovie Merchant, Ph.D MIS Spring 2005

13. Sylnovie Merchant, Ph.D. MIS 161 Spring 2005
Nodes
As a specific instance they are listed with a name, colon, and node type
Syntax name ':' node-type
Example Joe'sMachine:PC
Ask Dr. Merchant if we need to initial caps
Sylnovie Merchant, Ph.D MIS Spring 2005

14. Example of Nodes and Associations
Joe’s PC
Printer
<<USB>>
Sylnovie Merchant, Ph.D MIS Spring 2005

15. Sylnovie Merchant, Ph.D. MIS 161 Spring 2005
UML Notation
Joe’sMachine:PC
:GUI
Sylnovie Merchant, Ph.D MIS Spring 2005

16. Sylnovie Merchant, Ph.D. MIS 161 Spring 2005
Deployment Diagram
AdminServer:HostMachine
:Data- base
Update
Joe’sMachine:PC
:GUI
Sylnovie Merchant, Ph.D MIS Spring 2005

17. Method Specifications
Sylnovie Merchant, Ph.D MIS Spring 2005

18. Sylnovie Merchant, Ph.D. MIS 161 Spring 2005
Method Specification
A description of the methods in the individual classes
Provides detail for the programmers
Instructions on how to write the code
Provide one specification for each method
Sylnovie Merchant, Ph.D MIS Spring 2005

19. Sylnovie Merchant, Ph.D. MIS 161 Spring 2005
Syntax
No formal syntax specification
General information
Events
Message Passing
Algorithm Specification
Method Specification Form Example
Sylnovie Merchant, Ph.D MIS Spring 2005