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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
Creating views with Replace option : This option is used to alter the definition of the view without recreating and dropping it or regranting object privileges previously granted o
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
You are required to design and build a data mart/data warehouse using Oracle. A national bank allocates funding every year for its local branches to provide temporary staff cove
What's the difference between a primary key and a unique key? Both primary key and unique key enforces uniqueness of the column on which they are explained. But by default prim
i am required to come up with entities relationships, optionality and cardinality from a scenario. there is a night club and bookings for a musician band
What are the reasons for having variable length records? What are the various ways to store variable length records? Variable-length records arise in a database in various wa
Write short notes on data ware housing? Data ware housing applications needs the transformation of data from many sources into a cohesive reliable step set of data configured a
What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
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