The source code contains all the commands and comments a programmer used to code the software. The object code is the machine language the computer uses to run your program. Programmers need to run assembly language through an assembler to translate it into machine language. Some high-level languages also need to be translated. A compiler simultaneously translates high-level programming languages into machine language.
A structured decision is one that you make by applying a formula. You manipulate the right numbers in the fashion and arrive at the right answer-always. An unstructured decision is one for which there is no guaranteed way to get a precise right answer. There may be many right answers and there is no surefire way to reach any one of them.
An expert system, also called a knowledge-based system, is an artificial intelligence system that applies reasoning capabilities to reach a conclusion. A neural network is an artificial intelligence system that is capable of learning how to differentiate patterns. A genetic algorithm is an artificial intelligence system that mimics the evolutionary, survival-of-the-fittest process to generate increasingly better solutions to a problem. Fuzzy logic is a mathematical method handling imprecise or subjective information.
The six phases in the SDLC are: investigation, analysis, design, construction, implementation and support. In the first phase, we must assess all the initial feasibility. A time feasibility assessment determines if your organization can develop the proposed system while meeting certain deadlines. A technical feasibility assessment determines if your organization has access to or can acquire the necessary hardware and software for the proposed system. A fiscal feasibility assessment determines if your organization has sufficient resources to develop the proposed system and if the total cost of those resources falls within an allocated budget.
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