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What is a Data Flow Diagram?
Data Flow Diagram: A data flow diagram is the graph that shows flow of data values from their sources in objects in the course of processes which transform them to their destinations in other objects.
It does not show how values are controlled while computation. The Data Flow Diagram shows functional relationship of values computed by a system. DFD contains processes which transform data, data flows which move data, actor objects which produce and consume data and data store objects which store data passively.
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
education.
Which two tools are used to administer users for Active Directory?
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Explain the use of constraints in functional model with suitable example. A constraint shows relationship between two objects at same time, or among various values of the sam
Explain how the associations are implemented as classes. A general approach in this case is to transform an association class into a simple class linked to two original classes
job scheduling for different cubes
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