server/db_structure.xml

<?xml version="1.0" encoding="utf-8" ?>
<database>

	<name>*dbname*</name>
	<create>true</create>
	<overwrite>false</overwrite>

	<charset>utf8</charset>

	<table>

		<!--
		Namespaced Key-Value Store for Application Configuration.
		 - Keys are namespaced per appid.
		 - E.g. (core, global_cache_gc_lastrun) -> 1385463286
		-->
		<name>*dbprefix*appconfig</name>

		<declaration>

			<field>
				<name>appid</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>32</length>
			</field>

			<field>
				<name>configkey</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>configvalue</name>
				<type>clob</type>
				<notnull>false</notnull>
			</field>

			<index>
				<name>appconfig_appid_key_index</name>
				<primary>true</primary>
				<unique>true</unique>
				<field>
					<name>appid</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>configkey</name>
					<sorting>ascending</sorting>
				</field>
			</index>
			<index>
				<name>appconfig_config_key_index</name>
				<field>
					<name>configkey</name>
					<sorting>ascending</sorting>
				</field>
			</index>
			<index>
				<name>appconfig_appid_key</name>
				<field>
					<name>appid</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>

	</table>

	<table>

		<!--
		Bidirectional Map for Storage Names and Storage Ids.
		 - Assigns each storage name a unique storage id integer.
		 - Long storage names are hashed.
		 - E.g.                     local::/tmp/ <-> 2
		 - E.g. b5db994aa8c6625100e418406c798269 <-> 27
		-->
		<name>*dbprefix*storages</name>

		<declaration>

			<field>
				<name>id</name>
				<type>text</type>
				<default></default>
				<notnull>false</notnull>
				<length>64</length>
			</field>

			<field>
				<name>numeric_id</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<autoincrement>1</autoincrement>
				<length>4</length>
			</field>

			<field>
				<name>available</name>
				<type>integer</type>
				<default>1</default>
				<notnull>true</notnull>
			</field>

			<field>
				<name>last_checked</name>
				<type>integer</type>
			</field>

			<index>
				<name>storages_id_index</name>
				<unique>true</unique>
				<field>
					<name>id</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>

	</table>

	<!-- a list of all mounted storage per user, populated on filesystem setup -->
	<table>

		<name>*dbprefix*mounts</name>

		<declaration>

			<field>
				<name>id</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<autoincrement>1</autoincrement>
				<length>4</length>
			</field>

			<field>
				<name>storage_id</name>
				<type>integer</type>
				<notnull>true</notnull>
			</field>

			<!-- fileid of the root of the mount, foreign key: oc_filecache.fileid -->
			<field>
				<name>root_id</name>
				<type>integer</type>
				<notnull>true</notnull>
			</field>

			<field>
				<name>user_id</name>
				<type>text</type>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>mount_point</name>
				<type>text</type>
				<notnull>true</notnull>
				<length>4000</length>
			</field>

			<index>
				<name>mounts_user_index</name>
				<unique>false</unique>
				<field>
					<name>user_id</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>mounts_storage_index</name>
				<unique>false</unique>
				<field>
					<name>storage_id</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>mounts_root_index</name>
				<unique>false</unique>
				<field>
					<name>root_id</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>mounts_user_root_index</name>
				<unique>true</unique>
				<field>
					<name>user_id</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>root_id</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>

	</table>

	<table>

		<!--
		Bidirectional Map for Mimetypes and Mimetype Id
		 - Assigns each mimetype (and supertype) a unique mimetype id integer.
		 - E.g.     application <-> 5
		 - E.g. application/pdf <-> 6
		-->
		<name>*dbprefix*mimetypes</name>

		<declaration>

			<field>
				<name>id</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<autoincrement>1</autoincrement>
				<length>4</length>
			</field>

			<field>
				<name>mimetype</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>255</length>
			</field>

			<index>
				<name>mimetype_id_index</name>
				<unique>true</unique>
				<field>
					<name>mimetype</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>

	</table>

	<table>

		<!--
		Main file table containing one row for each directory and file.
		 - Assigns a unique integer fileid to each file (and directory)
		 - Assigns an etag to each file (and directory)
		 - Caches various file/dir properties such as:
		  - path (filename, e.g. files/combinatoricslib-2.0_doc.zip)
		  - path_hash = md5(path)
		  - name (basename, e.g. combinatoricslib-2.0_doc.zip)
		  - size (for directories this is the sum of all contained file sizes)
		-->
		<name>*dbprefix*filecache</name>

		<declaration>

			<field>
				<name>fileid</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<autoincrement>1</autoincrement>
				<length>4</length>
			</field>

			<!-- Foreign Key storages::numeric_id -->
			<field>
				<name>storage</name>
				<type>integer</type>
				<default></default>
				<notnull>true</notnull>
				<length>4</length>
			</field>

			<field>
				<name>path</name>
				<type>text</type>
				<default></default>
				<notnull>false</notnull>
				<length>4000</length>
			</field>

			<field>
				<name>path_hash</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>32</length>
			</field>

			<!-- Foreign Key filecache::fileid -->
			<field>
				<name>parent</name>
				<type>integer</type>
				<default></default>
				<notnull>true</notnull>
				<length>4</length>
			</field>

			<field>
				<name>name</name>
				<type>text</type>
				<default></default>
				<notnull>false</notnull>
				<length>250</length>
			</field>

			<!-- Foreign Key mimetypes::id -->
			<field>
				<name>mimetype</name>
				<type>integer</type>
				<default></default>
				<notnull>true</notnull>
				<length>4</length>
			</field>

			<!-- Foreign Key mimetypes::id -->
			<field>
				<name>mimepart</name>
				<type>integer</type>
				<default></default>
				<notnull>true</notnull>
				<length>4</length>
			</field>

			<field>
				<name>size</name>
				<type>integer</type>
				<default></default>
				<notnull>true</notnull>
				<length>8</length>
			</field>

			<field>
				<name>mtime</name>
				<type>integer</type>
				<default></default>
				<notnull>true</notnull>
				<length>4</length>
			</field>

			<field>
				<name>storage_mtime</name>
				<type>integer</type>
				<default></default>
				<notnull>true</notnull>
				<length>4</length>
			</field>

			<field>
				<name>encrypted</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<length>4</length>
			</field>

            <field>
                <name>unencrypted_size</name>
                <type>integer</type>
                <default>0</default>
                <notnull>true</notnull>
                <length>8</length>
            </field>

			<field>
				<name>etag</name>
				<type>text</type>
				<default></default>
				<notnull>false</notnull>
				<length>40</length>
			</field>

            <field>
                <name>permissions</name>
                <type>integer</type>
                <default>0</default>
                <notnull>false</notnull>
                <length>4</length>
            </field>


            <index>
				<name>fs_storage_path_hash</name>
				<unique>true</unique>
				<field>
					<name>storage</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>path_hash</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>fs_parent_name_hash</name>
				<field>
					<name>parent</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>name</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>fs_storage_mimetype</name>
				<field>
					<name>storage</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>mimetype</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>fs_storage_mimepart</name>
				<field>
					<name>storage</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>mimepart</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>fs_storage_size</name>
				<field>
					<name>storage</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>size</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>fileid</name>
				</field>
			</index>

		</declaration>

	</table>

	<table>

		<!--
		Stores which groups have which users as members in an n:m relationship.
		 - Maps group id (gid) to a set of users (uid)
		 - Maps user id (uid) to a set of groups (gid) (but without index)
		-->
		<name>*dbprefix*group_user</name>

		<declaration>

			<!-- Foreign Key groups::gid -->
			<field>
				<name>gid</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<!-- Foreign Key users::uid -->
			<field>
				<name>uid</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<index>
				<name>gu_gid_uid_index</name>
				<primary>true</primary>
				<unique>true</unique>
				<field>
					<name>gid</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>uid</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>gu_uid_index</name>
				<field>
					<name>uid</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>

	</table>

	<table>

		<!--
		Stores which groups have which users as admins in an n:m relationship.
		 - Maps group id (gid) to a set of users (uid)
		 - Maps user id (uid) to a set of groups (gid)

		NOTE: This could (very likely) be reduced to a single bit in group_user
		      instead of repeating varchars gid and uid here
		-->
		<name>*dbprefix*group_admin</name>

		<declaration>

			<!-- Foreign Key groups::gid -->
			<field>
				<name>gid</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<!-- Foreign Key users::uid -->
			<field>
				<name>uid</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>
			<index>
				<name>group_admin_uid</name>
				<field>
					<name>uid</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>ga_gid_uid_index</name>
				<primary>true</primary>
				<unique>true</unique>
				<field>
					<name>gid</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>uid</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>

	</table>

	<table>

		<!--
		A simple list of groups.
		-->
		<name>*dbprefix*groups</name>

		<declaration>

			<field>
				<name>gid</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<index>
				<name>groups_pKey</name>
				<primary>true</primary>
				<field>
					<name>gid</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>

	</table>

	<table>

		<!--
		Namespaced Key-Value Store for User Preferences
		 - Keys are namespaced per userid and appid.
		 - E.g. (admin, files, cache_version) -> 5
		-->
		<name>*dbprefix*preferences</name>

		<declaration>

			<!-- Foreign Key users::uid -->
			<field>
				<name>userid</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>appid</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>32</length>
			</field>

			<field>
				<name>configkey</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>configvalue</name>
				<type>clob</type>
				<notnull>false</notnull>
			</field>

			<index>
				<name>pref_userid_appid_key_index</name>
				<primary>true</primary>
				<unique>true</unique>
				<field>
					<name>userid</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>appid</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>configkey</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>

	</table>

	<table>

		<!--
		WebDAV properties.
		-->
		<name>*dbprefix*properties</name>

		<declaration>

			<field>
				<name>id</name>
				<autoincrement>1</autoincrement>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<length>4</length>
			</field>

			<!-- Foreign Key users::uid -->
			<field>
				<name>userid</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>propertypath</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>255</length>
			</field>

			<field>
				<name>propertyname</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>255</length>
			</field>

			<field>
				<name>propertyvalue</name>
				<type>text</type>
				<notnull>true</notnull>
				<length>255</length>
			</field>

			<index>
				<name>property_index</name>
				<field>
					<name>userid</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>

	</table>

	<table>

		<!--
		Shares of all types (user-to-user, external-via-link, etc.)
		-->
		<name>*dbprefix*share</name>

		<declaration>

			<field>
				<name>id</name>
				<autoincrement>1</autoincrement>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<length>4</length>
			</field>

			<!-- Constant OCP\Share::SHARE_TYPE_* -->
			<field>
				<name>share_type</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<length>1</length>
			</field>

			<!-- Foreign Key users::uid or NULL -->
			<field>
				<name>share_with</name>
				<type>text</type>
				<default></default>
				<notnull>false</notnull>
				<length>255</length>
			</field>

			<!-- Foreign Key users::uid -->
            <!-- This is the owner of the share
                 which does not have to be the initiator of the share -->
			<field>
				<name>uid_owner</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<!-- Foreign Key users::uid -->
            <!-- This is the initiator of the share -->
			<field>
				<name>uid_initiator</name>
				<type>text</type>
				<default></default>
				<notnull>false</notnull>
				<length>64</length>
			</field>



			<!-- Foreign Key share::id or NULL -->
			<field>
				<name>parent</name>
				<type>integer</type>
				<notnull>false</notnull>
				<length>4</length>
			</field>

			<!-- E.g. file or folder -->
			<field>
				<name>item_type</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<!-- Foreign Key filecache::fileid -->
			<field>
				<name>item_source</name>
				<type>text</type>
				<default></default>
				<notnull>false</notnull>
				<length>255</length>
			</field>

			<field>
				<name>item_target</name>
				<type>text</type>
				<default></default>
				<notnull>false</notnull>
				<length>255</length>
			</field>

			<!-- Foreign Key filecache::fileid -->
			<field>
				<name>file_source</name>
				<type>integer</type>
				<notnull>false</notnull>
				<length>4</length>
			</field>

			<field>
				<name>file_target</name>
				<type>text</type>
				<default></default>
				<notnull>false</notnull>
				<length>512</length>
			</field>

			<!-- Permission bitfield -->
			<field>
				<name>permissions</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<length>1</length>
			</field>

			<!-- Time of share creation -->
			<field>
				<name>stime</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<length>8</length>
			</field>

			<!-- Whether the receiver accepted the share, if share_with is set. -->
			<field>
				<name>accepted</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<length>1</length>
			</field>

			<!-- Time of share expiration -->
			<field>
				<name>expiration</name>
				<type>timestamp</type>
				<default></default>
				<notnull>false</notnull>
			</field>

			<field>
				<name>token</name>
				<type>text</type>
				<default></default>
				<notnull>false</notnull>
				<length>32</length>
			</field>

			<field>
				<name>mail_send</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<length>1</length>
			</field>

			<index>
				<name>item_share_type_index</name>
				<field>
					<name>item_type</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>share_type</name>
					<sorting>ascending</sorting>
				</field>
			</index>
			<index>
				<name>file_source_index</name>
				<field>
					<name>file_source</name>
					<sorting>ascending</sorting>
				</field>
			</index>
			<index>
				<name>token_index</name>
				<field>
					<name>token</name>
					<sorting>ascending</sorting>
				</field>
			</index>
		</declaration>

	</table>

	<table>

		<!--
		Scheduled background jobs.
		See OC\BackgroundJob\JobList.
		-->
		<name>*dbprefix*jobs</name>

		<declaration>

			<field>
				<name>id</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<autoincrement>1</autoincrement>
				<unsigned>true</unsigned>
				<length>4</length>
			</field>

			<field>
				<name>class</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>255</length>
			</field>

			<field>
				<name>argument</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>4000</length>
			</field>

			<field>
				<name>last_run</name>
				<type>integer</type>
				<default></default>
				<notnull>false</notnull>
			</field>

			<index>
				<name>job_class_index</name>
				<field>
					<name>class</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>

	</table>

	<table>

		<!--
		List of usernames, their display name and login password.
		-->
		<name>*dbprefix*users</name>

		<declaration>

			<field>
				<name>uid</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>displayname</name>
				<type>text</type>
				<default></default>
				<length>64</length>
			</field>

			<field>
				<name>password</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>255</length>
			</field>

			<index>
				<name>users_pKey</name>
				<primary>true</primary>
				<field>
					<name>uid</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>

	</table>

	<table>

		<!--
		List of tags (category) + a unique tag id (id) per user (uid) and type.
		-->
		<name>*dbprefix*vcategory</name>

		<declaration>

			<field>
				<name>id</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<autoincrement>1</autoincrement>
				<unsigned>true</unsigned>
				<length>4</length>
			</field>

			<!-- Foreign Key users::uid -->
			<field>
				<name>uid</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>type</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>category</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>255</length>
			</field>

			<index>
				<name>uid_index</name>
				<field>
					<name>uid</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>type_index</name>
				<field>
					<name>type</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>category_index</name>
				<field>
					<name>category</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>
	</table>

	<table>

		<!--
		Object-Tag associations per tag type.
		-->
		<name>*dbprefix*vcategory_to_object</name>

		<declaration>

		<field>
			<name>objid</name>
			<type>integer</type>
			<default>0</default>
			<notnull>true</notnull>
			<unsigned>true</unsigned>
			<length>4</length>
		</field>

		<!-- Foreign Key vcategory::id -->
		<field>
			<name>categoryid</name>
			<type>integer</type>
			<default>0</default>
			<notnull>true</notnull>
			<unsigned>true</unsigned>
			<length>4</length>
		</field>

		<field>
			<name>type</name>
			<type>text</type>
			<default></default>
			<notnull>true</notnull>
			<length>64</length>
		</field>

		<index>
			<primary>true</primary>
			<unique>true</unique>
			<name>category_object_index</name>
			<field>
				<name>categoryid</name>
				<sorting>ascending</sorting>
			</field>
			<field>
				<name>objid</name>
				<sorting>ascending</sorting>
			</field>
			<field>
				<name>type</name>
				<sorting>ascending</sorting>
			</field>
		</index>

		<index>
			<name>vcategory_objectd_index</name>
			<field>
				<name>objid</name>
				<sorting>ascending</sorting>
			</field>
			<field>
				<name>type</name>
				<sorting>ascending</sorting>
			</field>
		</index>

		</declaration>

	</table>

	<table>
		<!--
		List of system-wide tags
		-->
		<name>*dbprefix*systemtag</name>

		<declaration>

			<field>
				<name>id</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<autoincrement>1</autoincrement>
				<unsigned>true</unsigned>
				<length>4</length>
			</field>

			<!-- Tag name -->
			<field>
				<name>name</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<!-- Visibility: 0 user-not-visible, 1 user-visible -->
			<field>
				<name>visibility</name>
				<type>integer</type>
				<default>1</default>
				<notnull>true</notnull>
				<length>1</length>
			</field>

			<!-- Editable: 0 user-not-editable, 1 user-editable -->
			<field>
				<name>editable</name>
				<type>integer</type>
				<default>1</default>
				<notnull>true</notnull>
				<length>1</length>
			</field>

			<index>
				<name>tag_ident</name>
				<unique>true</unique>
				<field>
					<name>name</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>visibility</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>editable</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>
	</table>

	<table>

		<!--
		System tag to object associations per object type.
		-->
		<name>*dbprefix*systemtag_object_mapping</name>

		<declaration>

		<!-- object id (ex: file id for files)-->
		<field>
			<name>objectid</name>
			<type>integer</type>
			<default>0</default>
			<notnull>true</notnull>
			<unsigned>true</unsigned>
			<length>4</length>
		</field>

		<!-- object type (ex: "files")-->
		<field>
			<name>objecttype</name>
			<type>text</type>
			<default></default>
			<notnull>true</notnull>
			<length>64</length>
		</field>

		<!-- Foreign Key systemtag::id -->
		<field>
			<name>systemtagid</name>
			<type>integer</type>
			<default>0</default>
			<notnull>true</notnull>
			<unsigned>true</unsigned>
			<length>4</length>
		</field>

		<index>
			<unique>true</unique>
			<name>mapping</name>
			<field>
				<name>objecttype</name>
				<sorting>ascending</sorting>
			</field>
			<field>
				<name>objectid</name>
				<sorting>ascending</sorting>
			</field>
			<field>
				<name>systemtagid</name>
				<sorting>ascending</sorting>
			</field>
		</index>

		</declaration>

	</table>

	<table>

		<!--
		Namespaced Key-Value Store for arbitrary data.
		 - Keys are namespaced per userid and appid.
		 - E.g. (admin, files, foo) -> bar
		-->
		<name>*dbprefix*privatedata</name>

		<declaration>

		<field>
			<name>keyid</name>
			<type>integer</type>
			<default>0</default>
			<notnull>true</notnull>
			<unsigned>true</unsigned>
			<length>4</length>
			<autoincrement>1</autoincrement>
		</field>

		<!-- Foreign Key users::uid -->
		<field>
			<name>user</name>
			<type>text</type>
			<default></default>
			<notnull>true</notnull>
			<length>64</length>
		</field>

		<field>
			<name>app</name>
			<type>text</type>
			<default></default>
			<notnull>true</notnull>
			<length>255</length>
		</field>

		<field>
			<name>key</name>
			<type>text</type>
			<default></default>
			<notnull>true</notnull>
			<length>255</length>
		</field>

		<field>
			<name>value</name>
			<type>text</type>
			<default></default>
			<notnull>true</notnull>
			<length>255</length>
		</field>

		<index>
			<primary>true</primary>
			<unique>true</unique>
			<name>keyid_index</name>
			<field>
				<name>keyid</name>
				<sorting>ascending</sorting>
			</field>
		</index>

		</declaration>

	</table>

	<table>

		<!--
		Table for storing transactional file locking
		-->
		<name>*dbprefix*file_locks</name>

		<declaration>

			<field>
				<name>id</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<unsigned>true</unsigned>
				<length>4</length>
				<autoincrement>1</autoincrement>
			</field>

			<field>
				<name>lock</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<length>4</length>
			</field>

			<field>
				<name>key</name>
				<type>text</type>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>ttl</name>
				<type>integer</type>
				<default>-1</default>
				<notnull>true</notnull>
				<length>4</length>
			</field>

			<index>
				<primary>true</primary>
				<unique>true</unique>
				<name>lock_id_index</name>
				<field>
					<name>id</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<unique>true</unique>
				<name>lock_key_index</name>
				<field>
					<name>key</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>lock_ttl_index</name>
				<field>
					<name>ttl</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>

	</table>

	<table>
		<!--
		default place to store comment data
		-->
		<name>*dbprefix*comments</name>

		<declaration>

			<field>
				<name>id</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<unsigned>true</unsigned>
				<length>4</length>
				<autoincrement>1</autoincrement>
			</field>

			<field>
				<name>parent_id</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<unsigned>true</unsigned>
				<length>4</length>
			</field>

			<field>
				<name>topmost_parent_id</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<unsigned>true</unsigned>
				<length>4</length>
			</field>

			<field>
				<name>children_count</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<unsigned>true</unsigned>
				<length>4</length>
			</field>

			<field>
				<name>actor_type</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>actor_id</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>message</name>
				<type>clob</type>
				<default></default>
				<notnull>false</notnull>
			</field>

			<field>
				<name>verb</name>
				<type>text</type>
				<default></default>
				<notnull>false</notnull>
				<length>64</length>
			</field>

			<field>
				<name>creation_timestamp</name>
				<type>timestamp</type>
				<default></default>
				<notnull>false</notnull>
			</field>

			<field>
				<name>latest_child_timestamp</name>
				<type>timestamp</type>
				<default></default>
				<notnull>false</notnull>
			</field>

			<field>
				<name>object_type</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>object_id</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>
<!--
			TODO: finalize indexes when all queries are done
			<index>
				<name>comments_parent_id_index</name>
				<unique>false</unique>
				<field>
					<name>parent_id</name>
					<sorting>descending</sorting>
				</field>
			</index>

			<index>
				<name>comments_actor_index</name>
				<unique>false</unique>
				<field>
					<name>actor_type</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>actor_id</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>comments_object_index</name>
				<unique>false</unique>
				<field>
					<name>object_type</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>object_id</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>creation_timestamp</name>
					<sorting>descending</sorting>
				</field>
			</index>
-->

		</declaration>

	</table>

	<table>
		<!--
		default place to store per user and object read markers
		-->
		<name>*dbprefix*comments_read_markers</name>

		<declaration>

			<field>
				<name>user_id</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>marker_datetime</name>
				<type>timestamp</type>
				<default></default>
				<notnull>false</notnull>
			</field>

			<field>
				<name>object_type</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>object_id</name>
				<type>text</type>
				<default></default>
				<notnull>true</notnull>
				<length>64</length>
			</field>

		</declaration>

	</table>

	<table>
		<!--
		Encrypted credentials storage
		-->
		<name>*dbprefix*credentials</name>

		<declaration>

			<field>
				<name>user</name>
				<type>text</type>
				<default></default>
				<notnull>false</notnull>
				<length>64</length>
			</field>

			<field>
				<name>identifier</name>
				<type>text</type>
				<notnull>true</notnull>
				<length>64</length>
			</field>

			<field>
				<name>credentials</name>
				<type>clob</type>
				<notnull>false</notnull>
			</field>

			<index>
				<name>credentials_user_id</name>
				<primary>true</primary>
				<unique>true</unique>
				<field>
					<name>user</name>
					<sorting>ascending</sorting>
				</field>
				<field>
					<name>identifier</name>
					<sorting>ascending</sorting>
				</field>
			</index>

			<index>
				<name>credentials_user</name>
				<unique>false</unique>
				<field>
					<name>user</name>
					<sorting>ascending</sorting>
				</field>
			</index>

		</declaration>

	</table>

</database>