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Write short notes on extension and intension? In any data model, it is significant to distinguish among the description of the database and the database itself the description
Define reference file
What is a recursive relationship? Give an example not used in the text. A recursive relationship is a relationship among an entity and itself. For example, given the entity PER
Explain view in RDBMS? View - A view is a relation (virtual rather than base) and could be used in query expressions, which is, queries can be written by using the view as a re
difference between MIS and DSS
what is Storage-Device Hierarchy question
Identify the need and use of data control through problem solving, illustration
#floating point representation is used to store
Describe Dynamic Model. The dynamic model specifies allowable sequences of changes to the objects from an object model. It contains event trace diagrams describing scenarios. A
what is binary relationship
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