Data Warehouse Presentation
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Data Warehousing, what is it and what are the requirements?
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Semelhante a Data Warehouse Presentation
Semelhante a Data Warehouse Presentation (20)
Data Warehouse Presentation
- 1. Data Warehousing What is it and what are the requirements?
- 9. Finding Facts and Dimensions
- 13. Building a Bus Matrix
- 19. Ethnicity/Race The OMB race categories The Census question (600) Some Other Race (300) American Indian or Alaska Native (500) Native Hawaiian or Other Pacific Islander (200) Black or African American (400) Asian (100) White
- 35. Reporting Cubes Using Pivot Tables help you in reporting and analyzing data In this report, the Fact is Client count, the Dimensions are By Department, By Race, and By Active Year
- 36. Drill Down Capable From the previous report we have “drilled” into the Social Services Division, “down” to the program level. Cubes provide for drilling down into greater level of detail
- 37. Multi-Dimensional We say that these cubes are multi-dimensional. This report shows that we can combine dimensions to find even more interest information. Notice that the Fact is Unique Client , the Dimensions are By Race Group , By Gender , By Marital Status , By Department , and the Filter, or Selection, is For Active Year
- 38. Visual Graphs Reports are easily converted in to visual graphs. Here is the prior grid report in a graph format. “ Interesting” information is quickly noticed.
- 40. What is a Data Warehouse?
Notas do Editor
- What are some business facts that you need, or would like, to be able to report on? At the end of this presentation we will list some of these.
- The data warehouse is to help you answer business questions, questions like: [Slide] And, to help you answer questions like these we will providing you with what are called Reporting Cubes.
- Here is an example of how to identify Facts and Dimensions on an existing report The Facts are Count of Cases, Sum of Aid Payments, Average of Pay per Case The Dimensions are By Program, By Aid Type, By Calendar Month, For Fiscal Year
- Here we see another report. Again the fact is a count of Clients, the dimensions are By Race group, By Department, For Active Year
- These cubes can provide for drilling down into greater level of detail From the previous report we have “drilled” into the Social Services Division, “down” to the program level. Can you tell me what the dimensions are here? By Race By Department By Program By Active Year
- We say that these cubes are multi-dimensional. This report shows that we can combine dimensions to find even more interest information. Notice that the Fact is Unique Client , the Dimensions are By Race Group , By Gender , By Marital Status , By Department , and the Filter, or Selection, is For Active Year
- These reports are easily converted in to visual graphs. Here we see the prior grid report in a graph format. This allows us to quickly notice interesting information.
- And the way to ensure acceptance is to ensure we have YOUR requirements, so that it meets your needs. We are now going get your requirements. We are going identify the facts (numbers) you need, and how you would like them grouped by.