diff --git a/db/074to080.sql b/db/074to080.sql
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+alter table user
+     add column design_id integer comment 'id of a design' references design(id),
+     add column viewdesigns tinyint default 1 comment 'whether to view user-provided designs';
+
+alter table notice add column
+     conversation integer comment 'id of root notice in this conversation' references notice (id),
+     add index notice_conversation_idx (conversation);
+
+alter table foreign_user
+     modify column id bigint not null comment 'unique numeric key on foreign service';
+
+alter table foreign_link
+     modify column foreign_id bigint unsigned comment 'link to user on foreign service, if exists';
+
+alter table user_group
+      add column design_id integer comment 'id of a design' references design(id);
+
+create table file (
+    id integer primary key auto_increment,
+    url varchar(255) comment 'destination URL after following redirections',
+    mimetype varchar(50) comment 'mime type of resource',
+    size integer comment 'size of resource when available',
+    title varchar(255) comment 'title of resource when available',
+    date integer(11) comment 'date of resource according to http query',
+    protected integer(1) comment 'true when URL is private (needs login)',
+    filename varchar(255) comment 'if a local file, name of the file',
+    modified timestamp comment 'date this record was modified',
+
+    unique(url)
+) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_general_ci;
+
+create table file_oembed (
+    file_id integer primary key comment 'oEmbed for that URL/file' references file (id),
+    version varchar(20) comment 'oEmbed spec. version',
+    type varchar(20) comment 'oEmbed type: photo, video, link, rich',
+    provider varchar(50) comment 'name of this oEmbed provider',
+    provider_url varchar(255) comment 'URL of this oEmbed provider',
+    width integer comment 'width of oEmbed resource when available',
+    height integer comment 'height of oEmbed resource when available',
+    html text comment 'html representation of this oEmbed resource when applicable',
+    title varchar(255) comment 'title of oEmbed resource when available',
+    author_name varchar(50) comment 'author name for this oEmbed resource',
+    author_url varchar(255) comment 'author URL for this oEmbed resource',
+    url varchar(255) comment 'URL for this oEmbed resource when applicable (photo, link)',
+    modified timestamp comment 'date this record was modified'
+
+) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_general_ci;
+
+create table file_redirection (
+
+    url varchar(255) primary key comment 'short URL (or any other kind of redirect) for file (id)',
+    file_id integer comment 'short URL for what URL/file' references file (id),
+    redirections integer comment 'redirect count',
+    httpcode integer comment 'HTTP status code (20x, 30x, etc.)',
+    modified timestamp comment 'date this record was modified'
+
+) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_bin;
+
+create table file_thumbnail (
+
+    file_id integer primary key comment 'thumbnail for what URL/file' references file (id),
+    url varchar(255) comment 'URL of thumbnail',
+    width integer comment 'width of thumbnail',
+    height integer comment 'height of thumbnail',
+    modified timestamp comment 'date this record was modified',
+
+    unique(url)
+) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_bin;
+
+create table file_to_post (
+
+    file_id integer comment 'id of URL/file' references file (id),
+    post_id integer comment 'id of the notice it belongs to' references notice (id),
+    modified timestamp comment 'date this record was modified',
+
+    constraint primary key (file_id, post_id)
+
+) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_bin;
+
+create table design (
+    id integer primary key auto_increment comment 'design ID',
+    backgroundcolor integer comment 'main background color',
+    contentcolor integer comment 'content area background color',
+    sidebarcolor integer comment 'sidebar background color',
+    textcolor integer comment 'text color',
+    linkcolor integer comment 'link color',
+    backgroundimage varchar(255) comment 'background image, if any',
+    disposition tinyint default 1 comment 'bit 1 = hide background image, bit 2 = display background image, bit 4 = tile background image'
+) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_bin;
+
+create table group_block (
+   group_id integer not null comment 'group profile is blocked from' references user_group (id),
+   blocked integer not null comment 'profile that is blocked' references profile (id),
+   blocker integer not null comment 'user making the block' references user (id),
+   modified timestamp comment 'date of blocking',
+
+   constraint primary key (group_id, blocked)
+
+) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_bin;
+
+create table group_alias (
+
+   alias varchar(64) primary key comment 'additional nickname for the group',
+   group_id integer not null comment 'group profile is blocked from' references user_group (id),
+   modified timestamp comment 'date alias was created',
+
+   index group_alias_group_id_idx (group_id)
+
+) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_bin;