19147364
Description
Flashcards by Mikael Caselitz, updated more than 1 year ago
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Created by Mikael Caselitz
over 4 years ago
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| Question | Answer |
| Why is software development difficult | o Problem to ambiguous o Requirements change when becoming clearer o Problem domain (application domain) difficult --> Solution domain difficult o Dev. Process difficult to manage o Software = discrete system --> hidden surprises |
| What are components of software engineering as a problem solving activity | - Analysis: Understand problem and break it into peaces - Synthesis: Put pieces back together - Problem solving = creative activity - Tools, techniques and methodologies |
| Techniques | - Produce results using well defined notation E. g. Quick-sort |
| Methodologies | - Collection of techniques applied and unified by philosophical approch - E.g. functional decomposition, object oriented analysis and design |
| Tools | - Instruments/automated systems --> accomplish tech. -E.g. Compiler, Editor, debugger - Integrated developement enviroment(IDE) |
| Why using Abstraction(with models) | o Ignore unessential details o Two def.: - Thought process -> ideas distanced from objects (Abstraction as activity) - Result of thought process (Abstraction as entity) |
| Models | Object Model Functional model Dynamic model System model |
| Object model | For structure - Class diagram -object diagram - Communication diagram - Deployment diagram |
| Functional model | For functions - Scenarios - Use case diagrams |
| Dynamic model | Reaction to external events - Communication diagram - state chart diagram -activity diagram |
| System model | Object + Functional + Dynamic model |
| Uml diagrams and why to use them | Reduce complexity by focusing on abstraction Enabling generation of source code Communication between people |
| Software developement : activities and their model |
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