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These are designed to reduce the effects of a database failure and make sure a database is restored to a consistent state if a failure does arise. Manual backup/restore utilities n
Why is database design important?
Describe Database state in details? Database state: The actual data within the database at a particular moment in time is known as a database state.
What is Explicit update In explicit update, each derived attribute is defined with respect to one, or more fundamental base object(s). The object designer determines that de
State the functional approach of object oriented methods Moving from a functional approach to an object oriented one needs a translation of functional model elements into objec
Explain the Natural join Natural join is a binary operator which is written as (R* S) in which R and S are relations. The effect of the natural join is the set of all combinati
What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.
how does Btree differ from a B+ - tree?
Where does view definition stored? A view definition is permanently stored as part of the database.
What are the states of transaction? The states of transaction are:- a) Active b) Partially committed c) Failed d) Aborted e )Committed f) Terminated
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