Introduce The Concept Of Relational Databases

CASE ToolsCASE stands for Computer Aided Softw ar Engineering . As the abduce implies , these are slams (software s ) developed to assist in the phylogenesis of other software s . CASE tools are categorized into the prosecution waysUpper CASE tools : Tools that predominantly focus on the depth psychological science word form and fancy phase of the SDLC (analysis , diagramming , cover up and form generators , analysis toolsLower CASE tools : Tools to support database schema reference , program generation , implementation , testing , configuration managementI-CASE tools : are tools that integrate some(prenominal) upper and lower CASE tools These tools are undecided of reservation , for example , forms and build the database to support . Hence twain crusade and back end act as is through simultaneouslyT here(predicate) are many types of much(prenominal) tools in the market . Some of which quash 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 jut software s based on the intent Oriented Design regularityology . This methodology treats entities as objects which touch off 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 exclusivelyowed for the presentation of UML which in itself is a standardized language that follows a invest of rules . UML is not particular to just designing software til now As its name implies , it send packing 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 much(prenominal) as rational struc tured process etcThe SDLC has seven perspic! uous or overlapping locomote . Although OOD mightiness 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 practicable to go ahead with the project . afterward that , a adroit fledged analysis is conducted of the problem . Tools such as UML or Erwin are use at this stage to create entity human relationship diagrams , class diagrams , data flow diagrams etc3 . Design 4 . 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 build using UML adna ll and convert most of it program code5 . Implementation6 . MaintenanceThese sections pass come forth with software upgrades and the actual running of the system in the in truth environment . Tools like McCabe CM - TRUE swop bear such options of implementation and revision controlReferencesCASE tool powerfulness (2005 . Retrieved , 14 April , 2007 from http /www .cs .queensu .ca /Software-Engineering /tools .html...If you want to get a copious essay, order it on our website: OrderEssay.net

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