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brief history,definition,current trends and future trends if any of data fragmentation
Define weak and strong entity sets? Weak entity set: entity set that do not have key attribute of their own are known as weak entity sets. Strong entity set: Entity set that
What are views? Explain how views are different from tables? A view in SQL terminology is a one table in which is derived from other tables. These other tables could be base t
Describe Graphical User Interface? Graphical User Interfaces (GUIs) - A GUI typically displays a schema to the user in diagrammatic form. The user can then specify a query th
Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi
prototype of a distributed information system for a national car part retail outlet chain.
Although how will the system recover The selection of REDO or UNDO for a transaction for the recovery is completed on the basis of the state of the transactions. This state is
can you please explain with the help of suitable example the difference between conflict equivalence and conflict serializability?
What are the various symbols used to draw an E-R diagram (any 3)?
I have been given 8 differebt data warehouseing failure case studies. I need to question 4 questions for each
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