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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 and data warehouse? Give 4 differences at least.
4. Discus the major difference between relational database and object oriented database?
5. Text databases may be highly unstructured, semi structured and well structured. Give an example for each.
6. How can data mining affect our privacy? Give examples to illustrate your answer.
Foreign Keys and NULL Let us take the relation: DEPT DEPT ID DNAME BUDGET D1 M
Strict 2PL :Though, this basic 2PL suffers from the trouble that it can result into loss of isolation / atomic property of transaction as theoretically speaking once a lock is rele
Every simple attribute of an entity type have a possible set of values that can be attached to it. This is known as the domain of an attribute. An attribute cannot have a value out
Write a query that display ename annual salary and comm from emp table
write program
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
Draw an entity relationship diagram (ERD) for the following situation: A company has a number of employees. Each employee is identified by an Employee_Id. The company wants to st
various techniques of hashing?
What is an Index? An index is a small table having only two columns. The first column has a copy of the primary or candidate key of a table and the second column having a set o
You are managing the following database system: • DBMS: Oracle 11g • OS: Sun Solaris • System architecture: Web-based application using ASP.Net • Purpose of Server: HR managem
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