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Cardinality & Optionally
Cardinality represents the relationship between two entities. Consider one to many relationship between two entities -student andclass. Here cardinality of a relationship is the number of instances of entity student which can be associated with each instance of entity class. This is demonstrated in Figure.
Database Definition: There are four basic steps involved in defining a database. They are: i) Creating a Field Definition Table (FDT) : The possible content of data recor
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Define Data Dictionary. The data dictionary is defined as an organized collection of all the data elements of the system with accurate and rigorous definitions so that user and
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What is the use of User Interface prototyping? This prototyping is used to pre-specify the look and feel of user interface in an effective way.
Explain the term in brief- Test Script and Test Specification: Test Script: - It is generally used to refer to instructions for a particular test which will be carried out
What is a vertical microinstruction? Ans) A vertical microinstruction is a microinstruction that states one of a sequence of operations required to carry out a machine language
Define Data Flow Diagram. A Data flow diagram is a graphical description that depicts information flow & the transforms that are applied as data move from input to output. T
What are the advantages and disadvantages of size measure? Advantages: Artifact of software development which is simply counted. Many existing methods use LOC as a key input. A
What are the benefits of prototyping? i. Prototype serves as a basis for deriving system specification. ii. Design quality can be improved. iii. System can be maintained
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