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Datawarehousing Sequencing Chart

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Step 1Determine Users Needs

Does the company need a data

warehouse ...or even a data mart?

What are the business objectives?

Where do I get the data from?

Perform cost/benefit analysis, project

estimation and risk assessment

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Step 2Determine DBMS Server

Platform

Which database servers do we already

have?

Determine cost, interopability and staff

training considerations.

Determine DBMS server platform based

on Return on Investment (ROI)

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Step 3Determine Hardware PlatformWhere should the data warehouse or datamart be housed?

Which hardware platforms do we already

have?

Determine cost, interopability and staf

training considerations.

Determine hardware based on Return on

Investment (ROI).

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Step 4Information & Data ModelingBuilding an Information Model

How do I use a data model to express

relationships between the data?

Resolve access and usage issues.

Determine the logical and physical

design of the data warehouse or data

mart.

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Step 5Construct the Metadata

RepositoryHow do I keep track of what means what,

who can access it and how it will be accessed?

Build a repository.

Determine the business user's view of the

metadata repository.

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Step 6Data Acquisition & CleansingHow do I...

Extract

Cleanse

Scrub

Reconcile

AggregateSummarize

...data from various sources for the data

warehouse or data mart?

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Step 7Transformation,

Transportation, PopulationHow do I build the data warehouse or data

mart?

Transform the data.

Transport the data.

Populate the data warehouse or data

mart.

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Step 8Determine Middleware

ConnectivityHow do I connect the source data to the

target data warehouse or data mart?

Ongoing connection

Direct data access

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Step 9Prototyping, Querying &

Reporting

How do I:

Implement a prototype with userinvolvement?

Develop applications?

Use query and reporting tools?

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Step 10Data Mining

How do I find patterns in the data?

How can those patterns be used for

revenue growth?

How can tools be used to further identify

patterns in the data warehouse or datamart?

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Step 11Online Analytical ProcessingHow can users analyze the data?

How can the neccessary number of

dimensions be determined?

How can users see the data represented in

multiple dimensions?

How can they use the OLAP tools?

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Step 12Deployment & Systems

Management

How can I provide security, backup,

recovery and the necessary capabilities for a

production data warehouse or data mart?

How can resources be allocated best?

How can the growth of the data be

accommodated?

How can everything be kept running

smoothly?

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