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What is meant by normalization of data?
It is a process of examining the given relation schemas based on their Functional Dependencies (FDs) and primary key to achieve the properties
Minimizing redundancy
Minimizing insertion
deletion and
updating anomalies.
differences between a classified catalog and a dictionary catalog
What is database utility? Database utility is the interface among the ABAP/4 Dictionary and the underlying the SAP system.
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
What are the four main characteristics of the database approach? The four major characteristics of the database approach are: 1. Self-describing nature of a database system. 2.
Explain the difference between optimistic locking and pessimistic locking. Optimistic locking supposes no transaction conflict will occur and deals with the consequences if it
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Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
Failure Controlling Methods: Failures can be handled using different recovery methods that are talk about later in the unit. But the first question is doing we really require recov
Package classes and associations into models Programs are made of separate physical units which could be edited, imported, complied or otherwise manipulated. The careful part
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
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