What is part of a configuration management system (CMS)? 1. Configuration records 2. Configuration management databases 3. Physical assets 4. Release plans

The CMS is defined as a set of tools and databases that includes configuration records - individual data entries describing each CI - and one or more CMDBs that store those records in a structured way. The CMS manages information about assets rather than containing physical assets themselves, and release plans are separate documents owned by Release and Deployment Management.

Physical assets (item 3) are CIs that the CMS holds information about, but the physical items themselves are not components of the CMS information system.

Release plans (item 4) are artifacts of the Release and Deployment Management process and are not stored as structural components within the CMS.

Neither physical assets nor release plans are part of the CMS - the CMS is an information and data management system, not a repository for physical items or release documentation.