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Synonyms and Indexes
Some of the essential properties of indexes are:
The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
Can we delete data element, which is being used by table fields. No we cant delete data element.
What is primary Key Explain? Primary Key - Primary key is one of the candidate keys. It should be selected such in which its attribute values are never, or very rarely, chang
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
how to data store?
Objectives After reading this unit you should be able to: Explain storage of databases on hard disks; Discuss the execution of various file Organisation techniques;
Give the two reasons for allowing concurrency
Consistency: This property makes sure that a complete transaction implementation takes a database from one consistent state to another consistent state. If the transaction fails e
Data Redundancy -A lot of information is being repeated in the relation. For instance, the information that MCS-014 is named SSAD is repetitive, address of Rahul is "D- 27, Main ro
A full discription of the new, a discription of its components, and the bebefit it will provide a company. A disscussion of the information usedin the system. A disscussion of any
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