Metadata
1. What is metadata? a. Metadata is data about data. It refers to the data used to describe other data, such as
the length of a song in iTunes, which describes the music file. 11. Name three advantages of using a data warehouse.
a. The text lists the following (the student should pick at least three of these): i. The process of developing a data warehouse forces an organization to better
understand the data that it is currently collecting and, equally important, what data is not being collected.
ii. A data warehouse provides a centralized view of all data being collected across the enterprise and provides a means of determining data that is inconsistent.
iii. Once all data is identified as consistent, an organization can generate one version of the truth. This is important when the company wants to report consistent statistics about itself, such as revenue or number of employees.
iv. By having a data warehouse, snapshots of data can be taken over time. This creates a historical record of data, which allows for an analysis of trends.
v. A data warehouse provides tools to combine data, which can provide new information and analysis.
