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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
Question 1 What is data mining? Write Data Mining applications Question 2 What is OLAP? Write the benefits of OLAP Question 3 What is Business Intelligence? Explai
You are required to write a report which evaluates two of the following issues in relation to your case study database: a. Security issues b. Performance issues c. Backup
What are audit trails? An audit trail is a log of all alters to the database along with information like which user performed the change and when the alter was performed.
For the question given below, you are required to submit design and implementation documentation as described over the page. Design, implement (in Java), test and document a set of
what is Nested relational model? Explain with examples.
Suppose an instruction takes 1 nanosecond to execute (on average), a page fault takes 20 microseconds of processor time, and it takes 300 microseconds of disk time to read or write
Illustrate the term- Abstracting Out Common Behaviour Inheritance is not every time recognised during analysis phase of development, thus it is necessary to re-evaluate object
Replicating Data One approach that may support efficient access to dissimilar applications as above may be to give access to every of the applications from dissimilar replicate
Explain what is Aggregation ? Aggregation: This is used whenever we intend to show a relationship between an entity and the relationship. There is no provision for this in th
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
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