-| Field | Description | Type | Null | Key | Default | Extra |
-| ---------- | ----------------------------------------------- -------| ------------------- | ---- | --- | ------------------- | --------------- |
-| id | sequential ID | int(11) | NO | PRI | NULL | auto_increment |
-| uid | user_id of the owner of this data | int(11) | NO | MUL | 0 | |
-| cid | contact_id (ID of the contact in contact table) | int(11) | NO | | 0 | |
-| uri | | varchar(255) | NO | | | |
-| created | creation time | datetime | NO | | 0000-00-00 00:00:00 | |
-| edited | last edit time | datetime | NO | | 0000-00-00 00:00:00 | |
-| start | event start time | datetime | NO | | 0000-00-00 00:00:00 | |
-| finish | event end time | datetime | NO | | 0000-00-00 00:00:00 | |
-| summary | short description or title of the event | text | NO | | NULL | |
-| desc | event description | text | NO | | NULL | |
-| location | event location | text | NO | | NULL | |
-| type | event or birthday | varchar(255) | NO | | | |
-| nofinish | if event does have no end this is 1 | tinyint(1) | NO | | 0 | |
-| adjust | adjust to timezone of the recipient (0 or 1) | tinyint(1) | NO | | 1 | |
-| ignore | 0 or 1 | tinyint(1) unsigned | NO | | 0 | |
-| allow_cid | Access Control - list of allowed contact.id '<19><78>' | mediumtext | NO | | NULL | |
-| allow_gid | Access Control - list of allowed groups | mediumtext | NO | | NULL | |
-| deny_cid | Access Control - list of denied contact.id | mediumtext | NO | | NULL | |
-| deny_gid | Access Control - list of denied groups | mediumtext | NO | | NULL | |
+Events
+
+Fields
+------
+
+| Field | Description | Type | Null | Key | Default | Extra |
+| --------- | ---------------------------------------------------------- | ------------------ | ---- | --- | ------------------- | -------------- |
+| id | sequential ID | int unsigned | NO | PRI | NULL | auto_increment |
+| guid | | varbinary(255) | NO | | | |
+| uid | Owner User id | mediumint unsigned | NO | | 0 | |
+| cid | contact_id (ID of the contact in contact table) | int unsigned | NO | | 0 | |
+| uri | | varbinary(383) | NO | | | |
+| uri-id | Id of the item-uri table entry that contains the event uri | int unsigned | YES | | NULL | |
+| created | creation time | datetime | NO | | 0001-01-01 00:00:00 | |
+| edited | last edit time | datetime | NO | | 0001-01-01 00:00:00 | |
+| start | event start time | datetime | NO | | 0001-01-01 00:00:00 | |
+| finish | event end time | datetime | NO | | 0001-01-01 00:00:00 | |
+| summary | short description or title of the event | text | YES | | NULL | |
+| desc | event description | text | YES | | NULL | |
+| location | event location | text | YES | | NULL | |
+| type | event or birthday | varchar(20) | NO | | | |
+| nofinish | if event does have no end this is 1 | boolean | NO | | 0 | |
+| ignore | 0 or 1 | boolean | NO | | 0 | |
+| allow_cid | Access Control - list of allowed contact.id '<19><78>' | mediumtext | YES | | NULL | |
+| allow_gid | Access Control - list of allowed circles | mediumtext | YES | | NULL | |
+| deny_cid | Access Control - list of denied contact.id | mediumtext | YES | | NULL | |
+| deny_gid | Access Control - list of denied circles | mediumtext | YES | | NULL | |
+
+Indexes
+------------
+
+| Name | Fields |
+| --------- | ---------- |
+| PRIMARY | id |
+| uid_start | uid, start |
+| cid | cid |
+| uri-id | uri-id |
+
+Foreign Keys
+------------
+
+| Field | Target Table | Target Field |
+|-------|--------------|--------------|
+| uid | [user](help/database/db_user) | uid |
+| cid | [contact](help/database/db_contact) | id |
+| uri-id | [item-uri](help/database/db_item-uri) | id |