Model Versioning in Cognos Framework Manager

When you publish your model to the Cognos Content Store, you can specify how many versions of the model you want to keep available in the Content Store for the use of IBM Cognos BI. Model versioning is a handy facility that enables you to publish a new version of the model without worrying about breaking existing reports. Reports and other content are written against the latest version of the model at the time that content is created. If changes to the model are published subsequently, the existing reports will continue to reference the version against which they were created, as long as that version exists. If that version is removed, the existing reports will try to run against the latest model version, which may or may not work.

Note: To see which existing reports are impacted by changes to your model, select your package in the Project Viewer tree and then choose Actions --> Package --> Analyze Publish Impact. Framework Manager will look at the existing content based on that package and will tell you what content you need to check.