10 Questions
What is the primary purpose of a data warehouse?
To consolidate data from multiple sources for business intelligence
What is the key difference between a data warehouse and a transactional system?
Data in the data warehouse is integrated, while transactional data is siloed
What is the purpose of data cleansing in a data warehouse?
To identify and correct dirty data before it is loaded into the warehouse
What is a dimensional data mart?
A denormalized data store that contains fact tables and their corresponding dimension tables
What is the purpose of data consolidation in a data warehouse?
To combine data from multiple transactional systems into a single integrated data store
What is the purpose of data transformation in a data warehouse?
To change the data to suit the format and criteria of the target system
What is the purpose of conformed dimensions in a dimensional data store?
To provide a common set of dimensions that can be used across multiple fact tables
What is the primary use of data warehouses today?
For business intelligence and data mining
What is the relationship between data warehousing and business intelligence?
Many vendors prefer to use the term 'business intelligence' rather than 'data warehousing'
What is the main purpose of a dimensional data store?
To provide a denormalized, conformed data structure for business intelligence and reporting
Test your knowledge of the general steps in the waterfall methodology for data warehouse development, including feasibility study, requirements, architecture design, development, testing, deployment, and operation. Understand the split of design into functional design and technical design, along with the different types of testing involved.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
