ISBN : 978-81-963532-2-3 (E-Book) Use of CASE tools leads to considerable improvements to quality. This is mainly due tothefactsthatonecaneffortlesslyiteratethroughthedifferentphasesofsoftwaredevelopmenta nd thechances of humanerror areconsiderablyreduced. CASEtoolshelpproducehighqualityandconsistentdocuments.Sincetheimportantdata relating to a software product are maintained in a central repository, redundancy inthe stored data is reduced and therefore chances of inconsistent documentation is reducedtoa great extent. CASE tools take out most of the drudgery in a software engineer’s work. For example,they need not check meticulously the balancing of the DFDs but can do it effortlesslythroughthe press ofabutton. CASE tools have led to revolutionary cost saving in software maintenance efforts. Thisarises not only due to the tremendous value of a CASE environment in traceability andconsistency checks, but also due to the systematic information capture during the variousphasesof softwaredevelopment as a resultofadheringtoaCASE environment. IntroductionofaCASEenvironmenthasanimpactonthestyleofworkingofacompany,and makes it oriented towards thestructured and orderlyapproach. RequirementsofaprototypingCASEtool Prototypingisusefultounderstandtherequirementsofcomplexsoftwareproducts,todemonstrate a concept, to market new ideas, and so on. The important features of a prototypingCASEtool areas follows: • Defineuserinteraction • Definethesystemcontrolflow • Storeandretrievedatarequiredbythesystem • Incorporatesomeprocessinglogic Featuresof agoodprototypingCASEtool There are several stand-alone prototyping tools. But a tool that integrates with the data dictionarycan make use of the entries in the data dictionary, help in populating the data dictionary andensure theconsistency betweenthedesigndataandtheprototype.Agoodprototyping toolshouldsupport the followingfeatures: Sinceoneofthemainuses ofaprototypingCASE toolis graphicaluserinterface(GUI)development, prototyping CASE tool should support the 202 Software Engineering Keerthana P, Manasa KN, Ganga D Bengal
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