diff --git a/doc/SQL/mysql/2015110400.sql b/doc/SQL/mysql/2015110400.sql
new file mode 100644
index 0000000..22dd073
--- /dev/null
+++ b/doc/SQL/mysql/2015110400.sql
@@ -0,0 +1,23 @@
+CREATE TABLE IF NOT EXISTS `chwala_sessions` (
+    `id`         varchar(40) BINARY NOT NULL,
+    `uri`        varchar(1024) BINARY NOT NULL,
+    `owner`      varchar(255) BINARY NOT NULL,
+    `owner_name` varchar(255) DEFAULT NULL,
+    `data`       mediumtext,
+    PRIMARY KEY (`id`),
+    INDEX `uri_index` (`uri`(255)),
+    INDEX `owner` (`owner`)
+) /*!40000 ENGINE=INNODB */ /*!40101 CHARACTER SET utf8 COLLATE utf8_general_ci */;
+
+CREATE TABLE IF NOT EXISTS `chwala_invitations` (
+    `session_id` varchar(40) BINARY NOT NULL,
+    `user`       varchar(255) BINARY NOT NULL,
+    `user_name`  varchar(255) DEFAULT NULL,
+    `status`     varchar(16) NOT NULL,
+    `changed`    datetime DEFAULT NULL,
+    `comment`    mediumtext,
+    CONSTRAINT `session_id_fk_chwala_invitations` FOREIGN KEY (`session_id`)
+       REFERENCES `chwala_sessions`(`id`) ON DELETE CASCADE ON UPDATE CASCADE,
+    INDEX `session_id` (`session_id`),
+    UNIQUE INDEX `user_session_id` (`user`, `session_id`)
+) /*!40000 ENGINE=INNODB */ /*!40101 CHARACTER SET utf8 COLLATE utf8_general_ci */;
diff --git a/doc/SQL/oracle.initial.sql b/doc/SQL/oracle.initial.sql
index 1d523d0..104839b 100644
--- a/doc/SQL/oracle.initial.sql
+++ b/doc/SQL/oracle.initial.sql
@@ -1,15 +1,42 @@
 CREATE TABLE "chwala_locks" (
     "uri"     varchar(512) NOT NULL,
     "owner"   varchar(256),
     "timeout" integer,
     "expires" timestamp DEFAULT NULL,
     "token"   varchar(256),
     "scope"   smallint,
     "depth"   smallint
 );
 
 CREATE INDEX "uri_index" ON "chwala_locks" ("uri", "depth");
 CREATE INDEX "expires_index" ON "chwala_locks" ("expires");
 CREATE INDEX "token_index" ON "chwala_locks" ("token");
 
-INSERT INTO "system" ("name", "value") VALUES ('chwala-version', '2013111300');
+
+CREATE TABLE "chwala_sessions" (
+    "id"         varchar(40) NOT NULL,
+    "uri"        varchar(1024) NOT NULL,
+    "owner"      varchar(255) NOT NULL,
+    "owner_name" varchar(255) DEFAULT NULL,
+    "data"       long,
+    PRIMARY KEY ("id")
+);
+
+CREATE INDEX "chwala_sessions_uri_idx" ON "chwala_sessions" ("uri");
+CREATE INDEX "chwala_sessions_owner_idx" ON "chwala_sessions" ("owner");
+
+
+CREATE TABLE "chwala_invitations" (
+    "session_id" varchar(40) NOT NULL
+        REFERENCES "chwala_sessions" ("id") ON DELETE CASCADE ON UPDATE CASCADE,
+    "user"       varchar(255) NOT NULL,
+    "user_name"  varchar(255) DEFAULT NULL,
+    "status"     varchar(16) NOT NULL,
+    "changed"    timestamp DEFAULT NULL,
+    "comment"    long
+);
+
+CREATE INDEX "chwala_invitations_session_id_idx" ON "chwala_invitations" ("session_id");
+CREATE UNIQUE INDEX "chwala_invitations_user_idx" ON "chwala_invitations" ("user", "session_id");
+
+INSERT INTO "system" ("name", "value") VALUES ('chwala-version', '2015110400');
diff --git a/doc/SQL/oracle/2015110400.sql b/doc/SQL/oracle/2015110400.sql
new file mode 100644
index 0000000..1915a7f
--- /dev/null
+++ b/doc/SQL/oracle/2015110400.sql
@@ -0,0 +1,25 @@
+CREATE TABLE "chwala_sessions" (
+    "id"         varchar(40) NOT NULL,
+    "uri"        varchar(1024) NOT NULL,
+    "owner"      varchar(255) NOT NULL,
+    "owner_name" varchar(255) DEFAULT NULL,
+    "data"       long,
+    PRIMARY KEY ("id")
+);
+
+CREATE INDEX "chwala_sessions_uri_idx" ON "chwala_sessions" ("uri");
+CREATE INDEX "chwala_sessions_owner_idx" ON "chwala_sessions" ("owner");
+
+
+CREATE TABLE "chwala_invitations" (
+    "session_id" varchar(40) NOT NULL
+        REFERENCES "chwala_sessions" ("id") ON DELETE CASCADE ON UPDATE CASCADE,
+    "user"       varchar(255) NOT NULL,
+    "user_name"  varchar(255) DEFAULT NULL,
+    "status"     varchar(16) NOT NULL,
+    "changed"    timestamp DEFAULT NULL,
+    "comment"    long
+);
+
+CREATE INDEX "chwala_invitations_session_id_idx" ON "chwala_invitations" ("session_id");
+CREATE UNIQUE INDEX "chwala_invitations_user_idx" ON "chwala_invitations" ("user", "session_id");