tracing data requirements
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Tracing Data Requirements
By Declan Chellar
© Declan Chellar 2011
Assumptions
© Declan Chellar 2011
Assumptions
• The data requirements of any software development should be based on two key artefacts: The Data Dictionary The Logical Data Model
• Recording data requirements without reference to those artefacts leads to data redundancy
• Data redundancy leads to poor physical data modelling and ultimately to poor DB performance
© Declan Chellar 2011
• The data requirements of any software development should be based on two key artefacts: The Data Dictionary The Logical Data Model
• Recording data requirements without reference to those artefacts leads to data redundancy
• Data redundancy leads to poor physical data modelling and ultimately to poor DB performance
Assumptions
© Declan Chellar 2011
• The data requirements of any software development should be based on two key artefacts: The Data Dictionary The Logical Data Model
• Recording data requirements without reference to those artefacts leads to data redundancy
• Data redundancy leads to poor physical data modelling and ultimately to poor DB performance
Assumptions
© Declan Chellar 2011
• The data requirements of any software development should be based on two key artefacts: The Data Dictionary The Logical Data Model
• Recording data requirements without reference to those artefacts leads to data redundancy
• Data redundancy leads to poor physical data modelling and ultimately to poor DB performance
Assumptions
© Declan Chellar 2011
• The data requirements of any software development should be based on two key artefacts: The Data Dictionary The Logical Data Model
• Recording data requirements without reference to those artefacts leads to data redundancy
• Data redundancy leads to poor physical data modelling and ultimately to poor DB performance
Assumptions
© Declan Chellar 2011
Proposal
© Declan Chellar 2011
• Just as functional requirements are traced from business need to implementation, data requirements should be traced to eliminate redundancy and ensure coverage.
• The following procedure facilitates the tracing of data requirements to their source.
Proposal
© Declan Chellar 2011
• Just as functional requirements are traced from business need to implementation, data requirements should be traced to eliminate redundancy and ensure coverage.
• The following procedure facilitates the tracing of data requirements to their source.
Proposal
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Tracing Data Requirements
© Declan Chellar 2011
Scenario 1
© Declan Chellar 2011
Scenario 2
© Declan Chellar 2011
Scenario 3
© Declan Chellar 2011
Scenario 4
© Declan Chellar 2011
Scenario 5
© Declan Chellar 2011
Scenario 6
© Declan Chellar 2011
Scenario 7
© Declan Chellar 2011
Scenario 8
© Declan Chellar 2011
Scenario 9
© Declan Chellar 2011
Scenario 10
© Declan Chellar 2011
Scenario 11
© Declan Chellar 2011
Scenario 12
For a free JPG of this flow chart, please contact me via my blog.
www.chellar.com/blog
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