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multidimensional data model
The Database Approach In order to overcome the limits of a file system, a new approach was needed. Hence a database approach emerged. A database is a persistent collection of
Describe the candidate key functions ? Candidate Key and Alternate Key: In some instances, an entity will have more than one attribute which can serve as a primary key. Any key
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
intent locking
Which product produces the relation that has attributes of R1 and R2 ? Cartesian product produce the relation which has attributes of R1 and R2
Explain Domain calculus Domain calculus is one of the types of the relational calculus. The formal specification of the domain calculus was planned after the development of the
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
Question 1 List and explain various Normal Forms. How BCNF differs from the Third Normal Form and 4th Normal forms? Question 2 Describe the concepts of Structural Semantic Da
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