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Data Flow Diagrams (DFD)
It's a graphical representation of flow of data through a system. It pictures a system like a network of functional processes. The foundation of DFD is a data flow graph that pictorially represents transformation on data as demonstrated in Figure.
What does Data abstraction contains? A Data abstraction is a named collection of data that defines a data object Eg: door Attributes: door type, Opening mechanism, Swing di
State Entity /Relationship diagram. ERD depicts relationships among data objects. The ERD is the notation that is used to conduct the data modeling activity. The primary
Name the design phase of SDLC Generally, design is performed in the below two steps: i) Primary Design Phase: In this phase, system is designed at block level. Blocks are
Requirement traceability matrix RTM is a matrix tying up needs with the testcases. It is a way of making sure that each requirement has a corresponding testcase which will be t
What are the two levels of testing? i. Component testing Individual components are tested. Tests are produced from developer's experience. ii. System Testing The group
Q. Explain about non-functional requirement for a software ? Ans) Nonfunctional requirements are the basic characteristics of the system which will not be expressed as function
Discuss in details about Integration testing. It is a systematic procedure to construct the program structure. Incremental integration - The program is built and tested i
What are the causes behind to perform white box testing? There are three main reasons behind performing the white box testing. 1. Programmers may have some incorrect assumpt
I am working on DD development project and I am using 475 field communicator for testing DD. While development of DD, I tested DD with SDC 625 PC application using HART modem. I h
Alpha testing and Beta testing Alpha testing is conducting acceptance testing in the environment where the application was formed. It is done by the customer. Beta testing is c
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