diff --git a/plugins/calendar/drivers/kolab/SQL/sqlite.initial.sql b/plugins/calendar/drivers/kolab/SQL/sqlite.initial.sql
new file mode 100644
index 00000000..b6067d7d
--- /dev/null
+++ b/plugins/calendar/drivers/kolab/SQL/sqlite.initial.sql
@@ -0,0 +1,30 @@
+/**
+ * Roundcube Calendar Kolab backend
+ *
+ * @version @package_version@
+ * @author Thomas Bruederli
+ * @licence GNU AGPL
+ **/
+
+CREATE TABLE kolab_alarms (
+  alarm_id VARCHAR(255) NOT NULL,
+  user_id INTEGER NOT NULL,
+  notifyat DATETIME DEFAULT NULL,
+  dismissed TINYINT(3) NOT NULL DEFAULT '0',
+  PRIMARY KEY(alarm_id,user_id)
+);
+
+CREATE INDEX ix_kolab_alarms_user_id ON kolab_alarms(user_id);
+
+CREATE TABLE itipinvitations (
+  token VARCHAR(64) NOT NULL PRIMARY KEY,
+  event_uid VARCHAR(255) NOT NULL,
+  user_id INTEGER NOT NULL DEFAULT '0',
+  event TEXT NOT NULL,
+  expires DATETIME DEFAULT NULL,
+  cancelled TINYINT(3) NOT NULL DEFAULT '0'
+);
+
+CREATE INDEX ix_itipinvitations_uid ON itipinvitations(event_uid,user_id);
+
+INSERT INTO system (name, value) VALUES ('calendar-kolab-version', '2014041700');
diff --git a/plugins/libkolab/SQL/sqlite.initial.sql b/plugins/libkolab/SQL/sqlite.initial.sql
new file mode 100644
index 00000000..6f6f3c9a
--- /dev/null
+++ b/plugins/libkolab/SQL/sqlite.initial.sql
@@ -0,0 +1,159 @@
+/**
+ * libkolab database schema
+ *
+ * @version 1.1
+ * @author Thomas Bruederli
+ * @licence GNU AGPL
+ **/
+
+CREATE TABLE kolab_folders (
+  folder_id INTEGER NOT NULL PRIMARY KEY,
+  resource VARCHAR(255) NOT NULL,
+  type VARCHAR(32) NOT NULL,
+  synclock INTEGER NOT NULL DEFAULT '0',
+  ctag VARCHAR(40) DEFAULT NULL,
+  changed DATETIME DEFAULT NULL,
+  objectcount INTEGER DEFAULT NULL
+);
+
+CREATE INDEX ix_resource_type ON kolab_folders(resource, type);
+
+CREATE TABLE kolab_cache_contact (
+  folder_id INTEGER NOT NULL,
+  msguid INTEGER NOT NULL,
+  uid VARCHAR(128) NOT NULL,
+  created DATETIME DEFAULT NULL,
+  changed DATETIME DEFAULT NULL,
+  data TEXT NOT NULL,
+  xml TEXT NOT NULL,
+  tags TEXT NOT NULL,
+  words TEXT NOT NULL,
+  type VARCHAR(32) NOT NULL,
+  name VARCHAR(255) NOT NULL,
+  firstname VARCHAR(255) NOT NULL,
+  surname VARCHAR(255) NOT NULL,
+  email VARCHAR(255) NOT NULL,
+  PRIMARY KEY(folder_id,msguid)
+);
+
+CREATE INDEX ix_contact_type ON kolab_cache_contact(folder_id,type);
+CREATE INDEX ix_contact_uid2msguid ON kolab_cache_contact(folder_id,uid,msguid);
+
+CREATE TABLE kolab_cache_event (
+  folder_id INTEGER NOT NULL,
+  msguid INTEGER NOT NULL,
+  uid VARCHAR(128) NOT NULL,
+  created DATETIME DEFAULT NULL,
+  changed DATETIME DEFAULT NULL,
+  data TEXT NOT NULL,
+  xml TEXT NOT NULL,
+  tags TEXT NOT NULL,
+  words TEXT NOT NULL,
+  dtstart DATETIME,
+  dtend DATETIME,
+  PRIMARY KEY(folder_id,msguid)
+);
+
+CREATE INDEX ix_event_uid2msguid ON kolab_cache_event(folder_id,uid,msguid);
+
+CREATE TABLE kolab_cache_task (
+  folder_id INTEGER NOT NULL,
+  msguid INTEGER NOT NULL,
+  uid VARCHAR(128) NOT NULL,
+  created DATETIME DEFAULT NULL,
+  changed DATETIME DEFAULT NULL,
+  data TEXT NOT NULL,
+  xml TEXT NOT NULL,
+  tags TEXT NOT NULL,
+  words TEXT NOT NULL,
+  dtstart DATETIME,
+  dtend DATETIME,
+  PRIMARY KEY(folder_id,msguid)
+);
+
+CREATE INDEX ix_task_uid2msguid ON kolab_cache_task(folder_id,uid,msguid);
+
+CREATE TABLE kolab_cache_journal (
+  folder_id INTEGER NOT NULL,
+  msguid INTEGER NOT NULL,
+  uid VARCHAR(128) NOT NULL,
+  created DATETIME DEFAULT NULL,
+  changed DATETIME DEFAULT NULL,
+  data TEXT NOT NULL,
+  xml TEXT NOT NULL,
+  tags TEXT NOT NULL,
+  words TEXT NOT NULL,
+  dtstart DATETIME,
+  dtend DATETIME,
+  PRIMARY KEY(folder_id,msguid)
+);
+
+CREATE INDEX ix_journal_uid2msguid ON kolab_cache_journal(folder_id,uid,msguid);
+
+CREATE TABLE kolab_cache_note (
+  folder_id INTEGER NOT NULL,
+  msguid INTEGER NOT NULL,
+  uid VARCHAR(128) NOT NULL,
+  created DATETIME DEFAULT NULL,
+  changed DATETIME DEFAULT NULL,
+  data TEXT NOT NULL,
+  xml TEXT NOT NULL,
+  tags TEXT NOT NULL,
+  words TEXT NOT NULL,
+  PRIMARY KEY(folder_id,msguid)
+);
+
+CREATE INDEX ix_note_uid2msguid ON kolab_cache_note(folder_id,uid,msguid);
+
+CREATE TABLE kolab_cache_file (
+  folder_id INTEGER NOT NULL,
+  msguid INTEGER NOT NULL,
+  uid VARCHAR(128) NOT NULL,
+  created DATETIME DEFAULT NULL,
+  changed DATETIME DEFAULT NULL,
+  data TEXT NOT NULL,
+  xml TEXT NOT NULL,
+  tags TEXT NOT NULL,
+  words TEXT NOT NULL,
+  filename varchar(255) DEFAULT NULL,
+  PRIMARY KEY(folder_id,msguid)
+);
+
+CREATE INDEX ix_folder_filename ON kolab_cache_file(folder_id,filename);
+CREATE INDEX ix_file_uid2msguid ON kolab_cache_file(folder_id,uid,msguid);
+
+CREATE TABLE kolab_cache_configuration (
+  folder_id INTEGER NOT NULL,
+  msguid INTEGER NOT NULL,
+  uid VARCHAR(128) NOT NULL,
+  created DATETIME DEFAULT NULL,
+  changed DATETIME DEFAULT NULL,
+  data TEXT NOT NULL,
+  xml TEXT NOT NULL,
+  tags TEXT NOT NULL,
+  words TEXT NOT NULL,
+  type VARCHAR(32) NOT NULL,
+  PRIMARY KEY(folder_id,msguid)
+);
+
+CREATE INDEX ix_configuration_type ON kolab_cache_configuration(folder_id,type);
+CREATE INDEX ix_configuration_uid2msguid ON kolab_cache_configuration(folder_id,uid,msguid);
+
+CREATE TABLE kolab_cache_freebusy (
+  folder_id INTEGER NOT NULL,
+  msguid INTEGER NOT NULL,
+  uid VARCHAR(128) NOT NULL,
+  created DATETIME DEFAULT NULL,
+  changed DATETIME DEFAULT NULL,
+  data TEXT NOT NULL,
+  xml TEXT NOT NULL,
+  tags TEXT NOT NULL,
+  words TEXT NOT NULL,
+  dtstart DATETIME,
+  dtend DATETIME,
+  PRIMARY KEY(folder_id,msguid)
+);
+
+CREATE INDEX ix_freebusy_uid2msguid ON kolab_cache_freebusy(folder_id,uid,msguid);
+
+INSERT INTO system (name, value) VALUES ('libkolab-version', '2015020600');