Importance of DFDs in a good software design
The main reason why the DFD technique is so popular is probably because of the fact that DFD is a very simple formalism – it is simple to understand and…
q
The main reason why the DFD technique is so popular is probably because of the fact that DFD is a very simple formalism – it is simple to understand and…
DFD can represent Source, destination, storage and flow of data using the following set of components Entities – Entities are source and destination of information data. Entities are represented by rectangles…
There are two generic approaches for software designing:Top down Design We know that a system is composed of more than one sub-systems and it contains a number of components. Further, these…
In function-oriented design, the system is comprised of many smaller sub-systems known as functions. These functions are capable of performing significant task in the system. The system is considered as…
In axiomatic specification of a system, first-order logic is used to write the pre and post-conditions to specify the operations of the system in the form of axioms. The pre-conditions…
VerificationVerification is a static practice of verifying documents, design, code and programIt does not involve executing the codeIt is human based checking of documents and files. Verification uses methods like…
Black box testing advantagesTests are done from a user’s point of view and will help in exposing discrepancies in the specificationsTester need not know programming languages or how the software…
Black-box testing, also called behavioral testing, focuses on the functional requirements of the softwareThat is, black-box testing techniques enable you to derive sets of input conditions that will fully exercise…
White box testing advantagesTesting can be commenced at an earlier One need not wait for the GUI to be available.Testing is more thorough, with the possibility of covering most pathsWhite…
White-box testing, sometimes called glass-box testing, is a test-case design philosophy that uses the control structure described as part of component-level design to derive test cases. Using white-box testing methods, you…