file attachments
+Fields
+------
+
| Field | Description | Type | Null | Key | Default | Extra |
| ------------- | ----------------------------------------------------- | ------------------ | ---- | --- | ------------------- | -------------- |
| id | generated index | int unsigned | NO | PRI | NULL | auto_increment |
| data | file data | longblob | NO | | NULL | |
| created | creation time | datetime | NO | | 0001-01-01 00:00:00 | |
| edited | last edit time | datetime | NO | | 0001-01-01 00:00:00 | |
-| allow_cid | Access Control - list of allowed contact.id '<19><78> | mediumtext | YES | | NULL | |
+| allow_cid | Access Control - list of allowed contact.id '<19><78> | mediumtext | YES | | NULL | |
| allow_gid | Access Control - list of allowed groups | mediumtext | YES | | NULL | |
| deny_cid | Access Control - list of denied contact.id | mediumtext | YES | | NULL | |
| deny_gid | Access Control - list of denied groups | mediumtext | YES | | NULL | |
| backend-class | Storage backend class | tinytext | YES | | NULL | |
| backend-ref | Storage backend data reference | text | YES | | NULL | |
+Indexes
+------------
+
+| Name | Fields |
+| ------- | ------ |
+| PRIMARY | id |
+| uid | uid |
+
+Foreign Keys
+------------
+
+| Field | Target Table | Target Field |
+|-------|--------------|--------------|
+| uid | [user](help/database/db_user) | uid |
+
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