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 …
Data Mining & Warehousing
What is a virtual data warehouse?
A virtual warehouse is a set of views over an operational database For efficient query processing, only some of the …
What is motivated Data Mining? Why is it important?
Ans. Data mining has attracted a great deal of attention in the information industry and in society as a whole …
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 …
What are the various steps involved in the design and construction of a data warehouse?
From the software engineering point of view, the design and construction of a data warehouse may consist of the following …
Discuss major issues in data mining.
Major issues in data mining are as follows (i) Mining Methodology and User Interaction Issues— These reflect the kinds, of …
Explain the various classifications of the Data Mining System.
Data mining is an interdisciplinary field, the confluence of a set of disciplines, including database systems, statistics, machine learning, visualization, …
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, …
What is the concept/class description? How they can be derived.
Ans. Data can be associated with class or concept. For example, in the All Electronics store, classes of items for. …
What is OLAP? Discuss the basic operation of OLAP.
OLAP (online analytical processing) is an analysis technique with functionalities such as summarization. consolidation, and aggregation as well as the …
