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Compsci #6

From 6 [software engineering]

TermDefinition
Software products Generic software systems offer broad functionality for many customers, while custom software is essential for large organizations
Software product line A set of software products that share a common core. Each member of the product line includes customer-specific adaptations and additions
Project-based software engineering Starts with a set of software requirements owned by an external client. A software company designs the software, changing the software if the customer wants. Custom software has a 10+ year lifetime and must be supported over that time
Product-based software engineering Starts with a company finding a business opportunity. Then the company designs software, controlling the development timeline, features, and updates. Rapid delivery is crucial to capture the market
Platform A software product that includes functionality so that new applications can be built on it (ex Facebook)
Software execution models Stand-alone, Hybrid, Software service
Stand-alone The software executes entirely on the customer's computer
Hybrid Some of the software's functionality is implemented on the customer's computer, some are on the product developer's servers
Software service All of the product's features are implemented on the developer's servers and the customer accesses these through a browser or mobile app
Product prototyping Developing an early version of a product to test your ideas and convince company funders that your product has real market potential
Feasibility demonstration Executable system that tests new ideas to see if they work and to show management how its features are better than competitors
Customer demonstration Take a prototype and extend it with ideas for specific customer features. Before making this prototype, user studies are needed
Lack of prefabricated components Not enough ready made components to build software. The cloud provides platforms with ready made functions for making cloud-based applications
Lack of metrics Software quality factors are correctness of the output, reliability (failure rate), efficiency, and usability. No perfect metrics to measure these factors
Professional Organizations Codes of professional ethics. Organizations - ACM, IEEE, etc
Computer Aided Software Engineering(CASE) tools Set of software application programs, which are used to automate Software Development Life Cycle(SDLC) activities
Development phase of the software life cycle Requirements Analysis, Design stage, Implementation stage, Testing state
Requirements Analysis Requires significant input from the stakeholders. Identify the specifications of the software and the tools needed. Record all collected data and the analysis of this data into documents
Design stage Select a specific software engineering method, tools to develop, diagrams that show and clarify the design. Includes data flow diagram, UML, and human interface
Waterfall Model Traditional method
Incremental Model Prototyping
Agile methods Modern method
Implementation stage Create system from design. Write programs, create data files, and develop databases. Role of a software analyst
Testing stage Validation testing - confirm that system meets specifications. Defect testing - find bugs
Created by: jolly_n4
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