The product family concept ensures that all packages belonging to the same product family are updated in sync to the latest available version ("upgrade one, upgrade all").
The keyword #productfamily describes the property that combines all packages that logically fit together (for example, product family = CCS). Any package can belong to a single product family.
Based on the keyword #productfamily all products of the same product family are updated to the latest version level using the Installer command lsm with the -u option. This command lets the Installer scan for all matching products on the system and update them to the highest version.
All packages are updated to their highest version. A product that is provided with a lower version (in the local folder or on the 'Update CD') is not downgraded.
The structure of the 'Update CD' or local folder requires all packages either being provided in a flat folder or described through a library.dct file that must be provided separately.
For RPM packages the tag 'group' is used to identify the product family.
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