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Problem
1 Why are the operational system keys not recommended for forming data warehouse primary keys? Give any two examples
2 Explain the following performance tuning techniques
3 What is repository? How is it helpful to the data warehouse maintenance?
4 Explain the following strategies for Data Warehouse testing
Consider the relations EMP(ENO,ENAME,AGE,BASIC_SALARY) WORK_IN(ENO,DNO) DEPT(DNO,DNAME,CITY) Express the following queries in SQL (i) Find names of employees who work in a dep
find the name of supplier who supply some red part
What is a query tree? Ans: A query tree, as well known as operator graph, is a tree data structure that corresponds to a relational algebra expression. It denotes the inpu
please give me introduction to full data in D B M S in a short assignment
How many types of users works on database? Users are differentiated through the way they expect to interact along with the system (i) Application programmers-interact with
Question: (a) With the help of a diagram, explain the TOGAF framework for enterprise architectures. (b) Where would you position enterprise architectures in an enterpri
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
Differentiate between Primary and secondary storage? Primary and secondary storage - Primary storage device stores the data temporarily. Primary storage is commonly used thro
What is hashing file organization? In the hashing file organization, a hash function is computed on some attribute of every record. The result of the hash function specify in
Define Query Processing Query processing is the process of selecting the best plan or strategy to be employed in responding to a database request. The plan is then executed to
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