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Increased parallelism: Since the replicated date has several copies a query can be distributed or can be answered from the smallest loaded site. Also, with more replicas you have greater chances that the required data is found on the site where the transaction is implementing. Hence, data replication can minimise movement of data among sites.
Explain degree of relation? Degree of a Relation - The degree or arity of a relation is the number of attributes n of its relation schema.
1. Use the Invoice table structure shown below to answer the following questions: a) Draw the dependency diagram and identify the primary key and all dependencies, including al
Illustrate different types of Locks in SQL Server. There are three kinds of locks in SQL Server i.) Shared locks - These are used for operations which don't allow any update
State the definition of association An association is a structural relationship which specifies that objects of one thing are connected with objects of another. In UML, asso
What type of view of total database content? Data base content Conceptual view of total database contain.
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
In an E-R diagram an entity set is represent by? In an E-R digram entity set is represted by rectangle.
Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact
What is Information System?
can you please explain with the help of suitable example the difference between conflict equivalence and conflict serializability?
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