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Define the Attribute Inheritance
The attributes of a higher level entity set are inherited through a lower level entity set made by specialization-generalization hierarchy. Namely, all the attributes of the higher level entity set are as well the attributes of the lower level entity set.
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
The Maximum no of key fields that can be used in a header is?? 50
What is a B+-Tree index? A B+-Tree index takes the form of a balanced tree in which each path from the root of the root of the root of the tree to a leaf of the tree is of the
Which method of access uses key transformation? A Hash method of access uses key transformation.
Question 1 Define OLTP? Explain the Differences between OLTP and Data Warehouse Question 2 What is Architecture? Explain various components involved in it Question
What are the technique to define a schema completely ? A schema is completely define by DDL and DML query language.
Some disadvantages of File Oriented System ?
explain in detail about time stamp orderting/
You group has been hired by TrainingrUs.com to keeps track of training revenues. TrainingrUS.com wants you to keep scheduling. COURSE table contains following information:
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