Dataset Versions

Dataset versioning creates a library of historical planning data on which new versions can be based. This system has a number of advantages:

• Historical data can be retained for archive purposes
• Archive data can be reviewed when required
• Archive data cannot be modified
• New Project Planning can be based on a previous, existing version
• Only one Dataset can be active for editing at any time
• The currently active Dataset is indicated at the top right hand corner of each screen

  	At least one Planning version must always be retained.
  	Care must be taken when deleting Dataset versions.
  	Master versions should not be deleted. They should be moved into Archive and a new Master version created from the appropriate Planning version.
  Planning		Planning versions are available for modification.
  		There can be multiple Planning versions at any time.
  Master		Master versions will have read-only access and will be locked.
  		Only one Master version can exist at any time.
  		Deletion of Master versions is prohibited.
  		Master versions will contain only those projects with a status as defined with Application Settings.
  Archive		Archive versions will have read-only access.
  		Multiple Archive versions may exist.
  		Archive versions can be copied from Master versions only.
  Locked		Once planning versions have been locked, user modification is prevented.

Example