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What are the advantages of having an index structure?
Ans: The index structures commonly provide secondary access paths, which offer alternative ways of accessing the records without influencing the physical placement of records on disk. They allow efficient access to records based upon the indexing fields that are employed to construct the index. Indexes are used to enhance the efficiency of retrieval of records from a data file.
Natural Join : It is the similar like Equi join except one of the duplicate columns is removed in the result table. The natural join is the most usually used form of join operation
The Proliferation of Object-Oriented Methods The first few years of the 1990s saw blossoming of around fifty various object oriented methods. This proliferation is a sign of g
HOW MANY TYPES OF VIEWS
Consider the following frequency counts of some itemsets in a transaction database r : freq({A}, r) = 0.405 freq({B}, r) = 0.510 freq({C}, r) = 0.303 freq({A
I have been given 8 differebt data warehouseing failure case studies. I need to question 4 questions for each
What are the types of storage devices? Primary storage Secondary storage Tertiary storage Volatile storage Nonvolatile storage
System Design: An Object Oriented Approach Any software systems always try to change and evolve as technology and business rules evolve. The development of information systems
What are the various symbols used to draw an E-R diagram (any 3)?
Explain in detail about Collaboration Diagrams Collaboration diagrams are interaction diagrams which emphasize structural organisation of an object that transmit and receive m
Explain the concepts of relational data model? Relational Data Model - The relational model was first introduced through Prof. E.F. Codd of the IBM Research in the year 1970
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