Data warehousing

A technique for consolidating, organizing and managing data from a variety of sources.

What is the purpose of a data warehouse?

"Data warehouses are central repositories of integrated data from one or more disparate sources. They store current and historical data in one single place that are used for creating analytical reports for workers throughout the enterprise."

What role does a data warehouse play in business intelligence?

"It is considered a core component of business intelligence."

How do data warehouses benefit companies?

"This is beneficial for companies as it enables them to interrogate and draw insights from their data and make decisions."

What types of data sources can be integrated into a data warehouse?

"Data warehouses store integrated data from one or more disparate sources."

What is the process of transferring data into a data warehouse called?

"The data stored in the warehouse is uploaded from the operational systems."

What additional steps may be required before data is used in a data warehouse for reporting?

"The data may pass through an operational data store and may require data cleansing for additional operations to ensure data quality before it is used in the data warehouse for reporting."

What are the two main approaches used to build a data warehouse system?

"Extract, transform, load (ETL) and extract, load, transform (ELT) are the two main approaches used to build a data warehouse system."

How does a data warehouse support reporting and data analysis?

"A data warehouse is used for reporting and data analysis."

How does a data warehouse store historical data?

"They store current and historical data in one single place."

How does a data warehouse benefit workers throughout the enterprise?

"Creating analytical reports for workers throughout the enterprise."

What is the alternative name for a data warehouse?

"Also known as an enterprise data warehouse (EDW)."

What does an operational data store do in relation to a data warehouse?

"The data may pass through an operational data store."

What is the purpose of data cleansing?

"To ensure data quality before it is used in the data warehouse for reporting."

What is the primary function of ETL in building a data warehouse?

"Extract, transform, load (ETL) is one of the main approaches used to build a data warehouse system."

What is the primary function of ELT in building a data warehouse?

"Extract, load, transform (ELT) is one of the main approaches used to build a data warehouse system."

What role does a data warehouse play in decision-making?

"Enables them to interrogate and draw insights from their data and make decisions."

How is a data warehouse different from operational systems (e.g., marketing or sales)?

"The data stored in the warehouse is uploaded from the operational systems."

What is the relationship between a data warehouse and analytical reports?

"They store current and historical data in one single place that are used for creating analytical reports for workers throughout the enterprise."

How does a data warehouse enable companies to gain insights from their data?

"Enables them to interrogate and draw insights from their data and make decisions."

How does a data warehouse act as a central repository?

"Data warehouses are central repositories of integrated data from one or more disparate sources." Note: Please make sure to rephrase the questions in your actual study or assignment to avoid direct copy-pasting.