Versions Compared


  • This line was added.
  • This line was removed.
  • Formatting was changed.


  • This model is based on the assumption that the definitions of Identifier, Measure and Attribute components do not change based on data set type (i.e. Unit Data set or Dimensional Data Set). Currently the only difference is the inclusion of unit or dimensional

  • Need to investigate if Logical Record to Data Structure component relationship would work or is valid. Need to make sure this link is valid only in case of Unit Data Set. Perhaps add a constraint to the relationship between Logical Record and Data Structure Component?

  • Components are for Unit or for Dimensional data set can be identified through their use in Data Structure (i,e. - if they are part of Unit Data Structure then they are Components for Unit Data Set and if they are part of Dimensional Data Set then they are Components of Dimensional Data Set )

 New options from ABS

Image Added


  • Simple easy to understand model
  • Two layers of abstraction
  • Changes in the definitions of Components based on Unit and Dimensional type of Data Set is covered
  • Objects reduced from 10 to 7
  • Better distinction between two types of Data Sets

Things to note:

  • Unit Data Structure is connected to Components via Logical Record.
  • Data Structure Component's  relationship to 6 subtypes should be based on the type of Data Structure (e.g. in case of Unit Data Structure its subtypes would be Unit Identifier Component, Unit Measure Component and Unit Attribute Component)
  • Ensure that in case of Unit Data Structure, Unit related components are valid and in case of Dimensional Data Set, Dimensional related components are valid