| Tracks the versioning history of the database |
| This is a log of all major changes that happened to the DB since its creation. |
| name | type | length | unit | ucd | description |
| event | varchar | 256 | ID_IDENITIFIER | The event that happened | |
| previous | varchar | 64 | ID_TRACER | Version before the patch | |
| checksum | varchar | 64 | NUMBER | Checksum before the patch | |
| version | varchar | 64 | ID_TRACER | Version after the patch | |
| description | varchar | 256 | METADATA_DESCRIPTION | Summary of changes | |
| text | varchar | 2000 | METADATA_DESCRIPTION | Details of changes in HTML form | |
| who | varchar | 256 | ID_HUMAN | Person(s) responsible | |
| when | varchar | 256 | TIME_DATE | When it happened |