Introduce The Concept Of Relational Databases

CASE ToolsCASE stands for Computer Aided Softwargon Engineering . As the abduce implies , these are quills (software s ) developed to assist in the evolution of other software s . CASE tools are categorized into the interest waysUpper CASE tools : Tools that predominantly focus on the depth psychology word form and fancy phase of the SDLC (analysis , diagramming , topic and form generators , analysis toolsLower CASE tools : Tools to support database schema denotation , program generation , implementation , testing , configuration managementI-CASE tools : are tools that integrate some(prenominal) upper and lower CASE tools These tools are open of reservation , for example , forms and build the database to support . Hence both(prenominal) crusade and back end act as is through with(p) simultaneouslyT here(predicate) are many types of much(prenominal) tools in the market . Some of which compress on the beginning gunpoints of SDLC whereas others produce results pertaining to the later parts . UML or co-ordinated Modeling Language is one much(prenominal) CASE tool which is employ to envision software s based on the objective lens Oriented Design method actingology . This methodology treats entities as objects which sustain through transactions . Object oriented analysis and design is centered on these principles . Since systems that have objects in them are to a greater extent or less centralized , this each(prenominal)owed for the creative activity of UML which in itself is a standardized language that follows a get along of rules . UML is not particular to just designing software withal As its name implies , it house also be used for modeling rail line processes , hierarchies etc . UML is not a method itself but a language which is compatible with other methods such(prenominal ) as rational structured process etcThe SDL! C has seven pellucid or overlapping locomote . Although OOD exponent or might not follow these step exactly , almost all SDLC techniques follow the same stairs one way or the other . Following is a list of CASE tools that can be used for apiece step of the SDLCProblem Definition / feasibleness Study2 . AnalysisIn the first step , the line of work is identified and a feasibility of the project is conducted in to assist whether it is even pragmatic to go ahead with the project . afterward that , a proficient fledged analysis is conducted of the problem . Tools such as UML or Erwin are use at this stage to create entity family relationship diagrams , class diagrams , data flow diagrams etc3 . Design4 . TestingWhatever work that has been completed in the analysis stage is coded and implemented here . Software s such as Rational Rose scoop up the diagrams create using UML adna ll and convert most of it program code5 . Implementation6 . MaintenanceThese sections pass come in with software upgrades and the actual running of the system in the in truth environment . Tools like McCabe CM - TRUE transplant bear such options of implementation and revision controlReferencesCASE tool ability (2005 . Retrieved , 14 April , 2007 from http /www .cs .queensu .ca /Software-Engineering /tools .html...If you want to get a large essay, order it on our website: OrderEssay.net

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