Data Warehousing Interview Questions

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4) What is a fact table?
The fact table contains business process dimensions and foreign keys to dimension tables.

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Example - if the business process is brick production

Average number of bricks produced by one canada consumer mobile number list person/machine – business process indicator

There are four stages of data storage:

Data warehouse
Data warehouse
Autonomous operational database
Autonomous data storage
Real-time data warehouse
Integrated data warehouse
6) What is data mining?
Data mining is the process of analyzing data in different dimensions or perspectives and summarizing them into useful information. You can query and retrieve data from a database in its own format.

7) What is OLTP?
OLTP is short for Online Transaction Processing. It is an application that modifies data every time it is received and has a large number of concurrent users.