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Define Database layer? The database layer defines the data formats used in the database.
What is Distributed system ? Distributed System - A distributed system consists of a number of processing parts in which are interconnected through a computer network and in
What is trigger? Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
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What is an entity relationship model? The entity relationship model is a collection of basic objects known as entities and relationship between those objects. An
What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
Fourth Normal Form (4NF) When attributes in a relation have multi-valued dependency, further Normalization to 4NF and 5NF are needed. Let us first find out what multi-valued d
Multilevel Index The Multilevel Index is a modification of the secondary level index system. In this system we might be use even more number of levels in case the table is eve
Explain recovery process after system failure using checkpoint. Ans: Checkpoint scheme or method is an extra component of the log based recovery system. This scheme is used to
Define Cascading rollback The phenomenon where a single transaction failure leads to a series of transaction rollbacks is known as Cascading rollback.
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