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Creating views with Read only option : In the view definition this option is used to make sure that no DML operations can be done on the view.
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Write short notes on transaction state? A transaction may not always complete its implementation successfully such a transaction is termed aborted A transaction must be in o
Problem 1 Why are the operational system keys not recommended for forming data warehouse primary keys? Give any two examples 2 Explain the following performance tuning techn
Authorisation Authorisation is the culmination of the administrative policies of the organisation. As the name shows, authorisation is a set of rules that can be used to verif
Recovery Techniques: After Reading the types of failures and database errors, let us talk about how to recover from the failures. Recovery can be complete using/restoring the previ
What is a primary index? A primary index is an index whose search key also explains the sequential order of the file.
What is a SELECT operation? The select operation selects tuples that please a given predicate. We use the lowercase letter σ to denote selection.
#question.what is mapping constraints and types?.
What is the use of keyword ISA? The use of keyword ISA is to show that a class is a specialization of another class.
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