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data werehousing

What are different types of data warehouse models, from the architecture point of view?

Discussion in brief various types of the data warehouse. From an architecture point of view, there are three data warehouse models. They are as follows … Read more

Write a short note on multiway array aggregate for All cube computation.

The multiway. array aggregation or simply MultiWay method computes a full data cube by using a multidimensional array as its basic data structure. It is … Read more

What are the pros and cons of the top-down and bottom-up approaches to data warehouse development?

The top-down development of an enterprise warehouse serves as a systematic solution and minimizes integration problems. However, it is expensive, takes long dining to develop, … Read more

What are general optimization techniques for the efficient computation of data cubes?

The following are general optimization techniques for the efficient computation of data cubes. Technique One (sorting, hashing, and grouping)โ€” Sorting, hashing, and grouping operations should … Read more

The Data warehouse used some tools. What are the functions?

Data warehouse systems use back-end tools and utilities to populate and refresh their data. These tools and facilities include the following functionsโ€” 1 Data Extraction … Read more

Describe the recommended approach for data warehouse development.

A recommended method for the development of data warehouse systems is to implement the warehouse in an incremental and evolutionary manner, as shown in fig. … Read more

Discuss the role of metadata in the data warehouses.

Metadata is to the data warehouse what the card catalog is to a traditional library. It serves to identify the contents and location of data … Read more

A data warehouse is built on Historical data and is not guaranteed to be up-to-date information”. Comment.

The data warehouse is designed for strategic decision support and is largely built up from the database that makes up the operational database The basic … Read more

Explain various data types for data mining, with their application.

Write a short note on types of databases. There is a number of, different data repositories on .which mining can be performed. In principle, data … Read more

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