The data field ethnic group can be best described as A) ...

[clippers!]

The data field ethnic group can be best described as
 
  A) nominal data.
  B) interval data.
  C) ordinal data.
  D) ratio data.

Question 2

Briefly describe four major components of the data warehousing process.
 
  What will be an ideal response?

Question 3

WW Grainger is an example of a(n) ________.
 
  A) e-distributor
  B) exchange
  C) private industrial network
  D) e-procurement Net marketplace

[Jossy]

Answer to Question 1

A

Answer to Question 2

 Data sources. Data are sourced from multiple independent operational legacy systems and possibly from external data providers (such as the U.S. Census).
Data may also come from an OLTP or ERP system.
 Data extraction and transformation. Data are extracted and properly transformed using custom-written or commercial ETL software.
 Data loading. Data are loaded into a staging area, where they are transformed and cleansed. The data are then ready to load into the data warehouse and/or data marts.
 Comprehensive database. Essentially, this is the EDW to support all decision analysis by providing relevant summarized and detailed information originating from many different sources.
 Metadata. Metadata include software programs about data and rules for organizing data summaries that are easy to index and search, especially with Web tools.
 Middleware tools. Middleware tools enable access to the data warehouse. There are many front-end applications that business users can use to interact with data stored in the data repositories, including data mining, OLAP, reporting tools, and data visualization tools.

Answer to Question 3

A