Needs of data warehouse users
Tim Mitchell, a business intelligence architect who writes on many data science topics, published an article titled Why Data Warehouse Projects Fail (a link to the article is available in the Further reading section). He noted that many data warehouse projects fail—some have estimated the rate of failure to be as high as 50%. Since Mitchell has experience of rescuing data warehouse projects, he listed several reasons why he thinks data warehouse projects fail:
The data warehouse does not have an objective: In Chapter 7, Designing and Developing ETL Code in SAS, we described a hypothetical data warehouse with the objective of studying the quality of life (QoL) of United States veterans after they leave the service. However, Mitchell points out that in a surprising number of cases, leadership failed to answer the question of why the organization was building a data warehouse. Some would say they assumed their organization needed one simply...