Summary

These class notes cover the concepts of systems design, focusing on the steps involved from analysis to implementation. The notes reference models, activities, and key design questions relevant to the process.

Full Transcript

What is Systems Design Analysis provides the starting point for design Design provides the starting point for implementation Analysis and design results are documented to coordinate the work Objective of design is to define, organize, and structure the components of the final solution to s...

What is Systems Design Analysis provides the starting point for design Design provides the starting point for implementation Analysis and design results are documented to coordinate the work Objective of design is to define, organize, and structure the components of the final solution to serve as a blue print for construction Systems Analysis and Design in a Changing World, 7th Ed - Chapter 6 ©2016. Cengage Learning. All rights reserved. Analysis to Design to Implementation Systems Analysis and Design in a Changing World, 7th Ed - Chapter 6 ©2016. Cengage Learning. All rights reserved. OO Design: Bridging from Analysis to Implementation OO Design: Process by which a set of detailed OO design models are built to be used for coding Strength of OO is requirements models are extended to design models. No reinventing the wheel Design models are created in parallel to actual coding/implementation with iterative SDLC Agile approach says create models only if they are necessary. Simple detailed aspects don’t need a design model before coding Systems Analysis and Design in a Changing World, 7th Edition - Chapter 12 ©2016. Cengage Learning. All rights reserved. Analysis Models to Design Models Systems Analysis and Design in a Changing World, 7th Ed - Chapter 6 ©2016. Cengage Learning. All rights reserved. Design Activities Design activities correspond to components of the new system The environment Application components User interface Database Software classes and methods Systems Analysis and Design in a Changing World, 7th Ed - Chapter 6 ©2016. Cengage Learning. All rights reserved. Design Activities and Iterations Systems Analysis and Design in a Changing World, 7th Ed - Chapter 6 ©2016. Cengage Learning. All rights reserved. Key Design Questions for each Activity Systems Analysis and Design in a Changing World, 7th Ed - Chapter 6 ©2016. Cengage Learning. All rights reserved. Design Models Design is a model building activity The formality of the project will dictate the type, complexity, and depth of models Agile/iteration projects typically build fewer models, but models are still created Jumping to programming without design often causes less than optimum solutions and may require rework Systems Analysis and Design in a Changing World, 7th Ed - Chapter 6 ©2016. Cengage Learning. All rights reserved. Analysis to Design to Implementation: Model Flow Systems Analysis and Design in a Changing World, 7th Edition - Chapter 12 ©2016. Cengage Learning. All rights reserved.

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