| PKID | integer | plain | | | DAV server ID |
| owneruser | integer | plain | | users.ID | Owner user ID (PUBLIC if `owneruser`=`null` and `ownergroup`=`null`) |
| ownergroup | integer | plain | | groups.ID | Owner group ID (PUBLIC if `owneruser`=`null` and `ownergroup`=`null`) |
| creator | integer | plain | | users.ID | Creator user ID (defaults to authenticated user on creation) |
| creationdate | bigint | plain | | | Default: date_part('epoch', now())Creation date and time as a Unix timestamp (defaults to current date and time on creation) |
| lastmodified | bigint | plain | | | Default: date_part('epoch', now())Last modification date and time as a Unix timestamp (auto-reset on modification) |
| recipientuser | integer | plain | | users.ID | Recipient user ID (PUBLIC if `recipientuser`=`null` and `recipientgroup`=`null`) |
| recipientgroup | integer | plain | | groups.ID | Recipient group ID (PUBLIC if `recipientuser`=`null` and `recipientgroup`=`null`) |
| activity | smallint | plain | | | Default: 0Activity (`0`=ACTIVE, `1`=DEACTIVATED, `2`=DELETED) |
| name | text | main | | | Name |
| type | smallint | plain | | | Default: 0Collection type (`0`=CONTACTS, `2`=APPOINTMENTS, `1`=TASKS) |
| url | text | main | | | Endpoint URL |
| username | text | extended | | | Default: ''Username |
| ctag | text | extended | | | Default: ''Collection entity tag (CTag) (caldav-ctag-03) |
| synctoken | text | extended | | | Default: ''Synchronization token (RFC 6578) |
| description | text | extended | | | Default: ''Detailed general description |
| password | bytea | extended | | | No description provided. |