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1.Suppose you are given a dataset that consists of a random sample of tasters, on which the following variables were obtained: (y) Zpref = taste preference for green beans store
1.Why we need data mining? Give an example to illustrate your answer. 2. Why data mining is considered as "misleading name"? 3. Distinguish the difference between database an
Which operator is Cartesian product in relational algebra? Cartesian product in relational algebra is a binary operator. (It requires two operands. e.g., P X Q)
Which method is used to key transformation ? A hash method is used to key transformation.
What are the technique to define a schema completely ? A schema is completely define by DDL and DML query language.
usecase diagram,activity diagraM,SEQUENCE DIAGRAM
Explain the Attribute inheritance Ans: Throughout the rendering of the objects in a view, attribute sets of objects higher in the view hierarchy are inherited via objects below
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Describe relational model? Structure of relational data base Basic structure Database schema Keys Schema diagram Query languages
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