friendica-github/doc/database/db_attach.md

Table attach

file attachments

Fields

Field	Description	Type	Null	Key	Default	Extra
id	generated index	int unsigned	NO	PRI	NULL	auto_increment
uid	Owner User id	mediumint unsigned	NO		0
hash	hash	varchar(64)	NO
filename	filename of original	varchar(255)	NO
filetype	mimetype	varchar(64)	NO
filesize	size in bytes	int unsigned	NO		0
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_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	uid

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