Engineering Software is More Than Programming 114 To Learn More 115 Suggested

Engineering software is more than programming 114 to

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Engineering Software is More Than Programming 1.14 To Learn More 1.15 Suggested Projects Concepts Each chapter opening starts with a one-page summary of that chapter’s big concepts. For this introductory chapter, they are: Plan-and-Document software development processes or lifecycles rely on careful, up-front planning that is extensively documented and carefully managed to make software development more predictable. Prominent examples are Waterfall , Spiral , and the Rational Unified Process ( RUP ) lifecycles. In contrast, the Agile lifecycle relies on incrementally developed prototypes that involve continuous feedback from the customer on each iteration , each of which takes between one to four weeks. Service Oriented Architecture ( SOA ) creates apps from components that act as interoperable services, which allows new systems to be built from these components with much less effort. More importantly, from a software engineering perspective, SOA enables the construction of large services from many small ones, which history teaches us is more likely to be successful than a single large project. One reason is that smaller size allows use of Agile development, which has a superior track record. Software as a Service ( SaaS ) is a special case of SOA that deploys software at a single site but makes it available to millions of users over the Internet on their personal mobile devices, which provides benefits to both users and developers. The single copy of the software and the competitive environment for SaaS products leads to more rapid software evolution for SaaS than for shrink- wrapped software. Legacy Code evolution is vital in the real world, yet often ignored in software engineering books and courses. Agile practices enhancing code each iteration, so the skills gained also apply to legacy code. Cloud Computing supplies the dependable and scalable computation and storage for SaaS by utilizing Warehouse Scale Computers containing as many as 100,000 servers. The economies of scale allow Cloud Computing to be offered as a utility, where you pay only for actual use.
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Software quality is defined as providing business value to both customers and developers. Software Quality Assurance ( QA ) comes from many levels of testing: unit , module , integration , system , and acceptance . Clarity via conciseness , synthesis , reuse , and automation via tools are four paths to improving software productivity . The programming framework Ruby on Rails follows them to make SaaS developers productive. Don’t Repeat Yourself (DRY) warns not to use repetition to achieve reuse, as there should be one representation of each piece of knowledge. Since change is the norm for Agile, it is an excellent SaaS lifecycle, and the one on which the book focuses.
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1.1 Introduction Now, this is real simple. It’s a website where you can compare and purchase affordable health insurance plans, side-by-side, the same way you shop for a plane ticket on Kayak or the same way you shop for a TV on Amazon...Starting on Tuesday, every American can visit HealthCare.gov to find out what’s called the insurance marketplace...So tell your friends, tell your family...Make sure they sign up.
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  • Spring '19
  • Dr.Marcos

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