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What does authentication refer?
Authentication refers to the task of verifying the uniqueness of a person.
Define a property that is not a property of transactions? Ans: Concurrency is not a property of transactions
What is an index? An index is a structure that helps to place desired records of a relation quickly, without probing all records.
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
Mixed fragmentation: Sometimes, horizontal fragmentation or vertical fragmentation of a database schema by itself is insufficient to sufficiently distribute the data for some appli
Why older data models are being replaced by new data modelling 100 words accepted#
Assigning Responsibility for Operation Many operations might have obvious target objects, but some of these operations could be used at numerous places in an algorithm, by one
Define the terms i) DDL ii) DML DDL: Data base schema is specified by a set of definitions expressed by a special language known as a data def
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.
Problem: A DBMS built for Online Transaction Processing (OLTP) is usually regarded as unsuitable for data warehousing. Each system is designed with a different set of requireme
how to make an e r diagram?
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