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Define the notation for classes and atrributes
The notation for class, attribute, and operations are shown below:
Figure: Class with attributes and operations
An interface is a set of operations which are used to specify a service of a class or a component.
What is a SELECT operation? The select operation selects tuples that please a given predicate. We use the lowercase letter σ to denote selection.
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Define average latency time. The average latency time of the disk is one-half the time for a full rotation of the disk.
what problems are raised by the database? why is it so controversial? why is data quality an issue?
Wait-die" scheme : The idea is based on non-preventive method. It is based on a simple rule: If Ti requests a database resource that is held by T
Define Assertions in SQL a. An assertion is a predicate that is expressing a condition we wish the database to always satisfy. b. Domain constraints, functional dependency
Index And Tree Structure Let us talk about the data structure that is used for creating indexes. Can we use Binary Search Tree (BST) as Indexes? Let us initial reconsider
please describe the data base management with the easy example &give the application?
explain in details about one to one binary relationship
need requirement analysis for database management of stock market
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