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Derived horizontal fragmentation: Some applications may include a join of two or more relations. If the relations are stored at dissimilar locations, there may be a major overhead
Design a gennalization and specialization hierarchy for an automobile sales company
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
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Find out the names and company names of all employees sorted in ascending order of company name and descending order of employee names of by which company. SELECT EMPLOYEE_NAME,
What are the technique to define a schema completely ? A schema is completely define by DDL and DML query language.
In E-R diagram how generalization is represented? in E-R diagram generalization is represented by Triangle shape.
Write A short note on temporary tables? Temporary Tables - Temporary tables exists solely for a particular session, or whose data persists for the duration of the transaction
List the drawbacks of relational database system A) Repetition of data B) Inability to s certain information.
Explain the Deferred Update The deferred update methods do not physically update the database on disk till after a transaction reaches its commit point; after that the updates
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