20 Questions
What is the main purpose of a data warehouse?
On-line analytical processing (OLAP) tools for interactive multidimensional data analysis
Which step can be considered as an important preprocessing step for data mining?
Data selection and cleaning
What does the FACT table in a data warehouse contain?
Data related to dimensions and measures
What feature does a data warehouse provide for interactive analysis?
On-line analytical processing (OLAP) tools
In a data warehouse, what is considered as an important step for providing clean data for analysis?
Data selection and cleaning
What is the primary purpose of a data warehouse?
To provide historical data for analysis in decision-making processes
What does 'subject-oriented' mean in the context of a data warehouse?
Organized around major subjects like customer and product
What is a key aspect of data integration in a data warehouse?
Consistency of attribute names and data types
What is the purpose of data cleaning in a data warehouse?
To clean incomplete or logically inconsistent tuples
What does OLAP stand for in the context of a data warehouse?
Online Analytical Processing
What is the primary purpose of on-line analytical processing (OLAP) tools in a data warehouse?
To provide tools for interactive multidimensional data analysis
In the context of a data warehouse, what does 'multi-dimensional data model' refer to?
A model that organizes data into dimensions and measures for complex analysis
What is the main purpose of data summarization in the context of a data warehouse?
To provide a high-level overview of the data for faster analysis
What is a key aspect of data integration in a data warehouse?
Combining data from multiple sources into a cohesive format
What is a significant benefit of a data warehouse for data mining?
Enabling interactive analysis through OLAP tools
What is the primary function of a data warehouse?
To provide a platform for consolidated, historical data for analysis
What does 'subject-oriented' mean in the context of a data warehouse?
Organizing data around major subjects for easy access
What is one of the key aspects of data integration in a data warehouse?
Consistency in naming conventions and encoding structures among different data sources
What is the purpose of data cleaning in a data warehouse?
To clean tuples which are incomplete or logically inconsistent
What does OLAP stand for in the context of a data warehouse?
Online Analytical Processing
Test your knowledge of data warehouses, OLAP technology, and data mining with this quiz. Explore topics such as the data warehouse architecture, multi-dimensional data model, implementation, and data cube technology.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
