Introduce The Concept Of Relational Databases

CASE ToolsCASE stands for Computer Aided Software Engineering . As the abduce implies , these are tools (software s ) developed to assist in the phylogeny of other software s . CASE tools are categorized into the pursuit waysUpper CASE tools : Tools that predominantly focus on the depth psychology word form and fancy phase of the SDLC (analysis , diagramming , report and form generators , analysis toolsLower CASE tools : Tools to support database schema extension , program generation , implementation , testing , configuration managementI-CASE tools : are tools that integrate some(prenominal) upper and lower CASE tools These tools are capable of reservation , for example , forms and build the database to support . Hence both crusade and back end act as is done simultaneouslyT here(predicate) are many types of much(prenominal) tools in the market . Some of which concentrate on the beginning gunpoints of SDLC whereas others produce results pertaining to the later parts . UML or co-ordinated Modeling Language is one such CASE tool which is used to design software s based on the object Oriented Design methodology . This methodology treats entities as objects which move 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 allowed for the creation of UML which in itself is a standardized language that follows a set of rules . UML is not particular to just designing software however As its name implies , it can 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 as rational structured process etcThe SDLC has seven distinct or overlapping locomote . Although OOD might 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 / Feasibility 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 practical to go ahead with the project . afterward that , a adept fledged analysis is conducted of the problem . Tools such as UML or Erwin are use at this stage to create entity 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 built using UML adna ll and convert most of it program code5 . Implementation6 . MaintenanceThese sections pass out with software upgrades and the actual running of the system in the in truth environment . Tools like McCabe CM - TRUE change bear such options of implementation and revision controlReferencesCASE tool index (2005 . Retrieved , 14 April , 2007 from http /www .cs .queensu .ca /Software-Engineering /tools .html...If you want to get a full essay, order it on our website: Ordercustompaper.com

If you want to get a full essay, wisit our page: write my paper