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What is an index?
An index is a structure that helps to place desired records of a relation quickly, without probing all records.
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
Question: Describe briefly the three parts of the Relational Model. (a) The term integrity refers to the accuracy or correctness of the data in the database. Define the fol
Q. What is relational algebra and calculus? Explain the relational algebra operators :- Selection and predicate, set operation, joins and division. Sol. Relational Algebra
Why older data models are being replaced by new data modelling 100 words accepted#
Define Query Processing Query processing is the process of selecting the best plan or strategy to be employed in responding to a database request. The plan is then executed to
What is meant by software and hardware RAID systems? RAID can be executed with no change at the hardware level, using only software modification. Such RAID implementations are
Three way to handle missing field val
A basic model of Database Access Control Models of database access control have grown out of previous work on protection in operating systems. Let us talk about one simple mode
assignment
explain ANSI SPARC architecture
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