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Data Fragmentation
"Fragmentation includes decomposing the data in relation to non-overlapping component relations".
Why do we require fragmenting a relation?
write program
Although, the essential features of E-R diagrams are enough to design many database situations. Though, with more difficult relations and advanced database applications, it is need
why older data models are being replaced by new data models.
The primary key is selected from the
Type of database technology
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In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
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
er diagtram for icici
What is the archtetype/instance pattern? The archetype/instance pattern happens when one entity tracks occurrences of another entity. A common example is the relationship among
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