what is entity it is most elementary thing of
What is Entity
It is most elementary thing of an organisation about which data has to be maintained. Each entity has unique identity. It's represented by rectangular box with the name of entity written inside (commonly in capital letters).
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what are the related data itemsrelated data items captures details of related attributes range of values store total possible values of that data
demonstrate the symbol used in data dictionarya number of the symbols used in data dictionary are as followingx ab
illustrate the example of data dictionary of payroll data dictionary of payroll may include below fieldspayroll payroll details employee
explain about the e-r diagramentity-relationship e-r diagram is detailed logical representation of data for an organisation it is data oriented model
what is entity it is most elementary thing of an organisation about which data has to be maintained each entity has unique identity its
what is relationship entities are associated to each other by relationships it denotes how two entities are associated a diamond notation with name
explain the structured requirements definitionstructured requirements definition is an approach to perform study about complete system and its
determine the different steps of structured requirements definitionstep 1 make a user level data flow diagram this step is meant for gathering
explain the process of prototypingprototyping is a process which enables developer to create a small model of software ieee 61012 standard defines
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