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Describe briefly models which define the operations on classes.
The three models which are used to define operations on classes are as:
Object Model = data dictionary + Object model diagram
Dynamic Model = global event flow diagram + State diagrams
Functional Model = constraints + Data flow diagrams.
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Explain Data Dictionary in short?
In a Hierarchical model of data records are organized ? In the hierarchical model of data records are organized as Tree structure.
normal forms
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