diff --git a/create-schema.sql b/create-schema.sql
index f687a14..f8e77be 100644
--- a/create-schema.sql
+++ b/create-schema.sql
@@ -1,17 +1,33 @@
-CREATE TABLE users (
+CREATE TABLE users_t (
     id INTEGER AUTO_INCREMENT,
     username VARCHAR(25) NOT NULL,
     pw VARCHAR(512) NOT NULL,
     super INT(1) NOT NULL DEFAULT 0,
     PRIMARY KEY (id)
 );
-CREATE UNIQUE INDEX users_username ON users (username);
+CREATE UNIQUE INDEX users_username ON users_t (username);
 
-CREATE TABLE acls (
+CREATE OR REPLACE VIEW users AS
+  SELECT username, pw, super
+    FROM users_t;
+
+CREATE TABLE acls_t (
     id INTEGER AUTO_INCREMENT,
-    username VARCHAR(25) NOT NULL,
+    user INTEGER NOT NULL,
     topic VARCHAR(256) NOT NULL,
     rw INTEGER(1) NOT NULL DEFAULT 1,	-- 1 is read, 2 is write, 3 is readwrite, 4 is subscribe
-    PRIMARY KEY (id)
+    PRIMARY KEY (id),
+    CONSTRAINT `fk_book_author`
+      FOREIGN KEY (user) REFERENCES users_t (id)
+      ON DELETE CASCADE
+      ON UPDATE CASCADE
     );
-CREATE UNIQUE INDEX acls_user_topic ON acls (username, topic(228));
+CREATE UNIQUE INDEX acls_user_topic ON acls_t (user, topic);
+
+CREATE OR REPLACE VIEW acls AS
+  SELECT a.topic, a.rw,
+         u.username
+    FROM users_t u, acls_t a
+    WHERE a.user = u.id;
+
+    
diff --git a/readme.md b/readme.md
index cba8d2e..cde7e81 100644
--- a/readme.md
+++ b/readme.md
@@ -84,24 +84,40 @@ Actually, it appears to me that the meaning of this attribute has to be interpre
 
 The required schema in the database is 
 
-    CREATE TABLE users (
-        id INTEGER AUTO_INCREMENT,
-        username VARCHAR(25) NOT NULL,
-        pw VARCHAR(512) NOT NULL,
-        super INT(1) NOT NULL DEFAULT 0,
-        PRIMARY KEY (id)
-    );
-    CREATE UNIQUE INDEX users_username ON users (username);
 
-    CREATE TABLE acls (
-        id INTEGER AUTO_INCREMENT,
-        username VARCHAR(25) NOT NULL,
-        topic VARCHAR(256) NOT NULL,
-        rw INTEGER(1) NOT NULL DEFAULT 1,	-- 1 is read, 2 is write, 3 is readwrite, 4 is subscribe
-        PRIMARY KEY (id)
-        );
-    CREATE UNIQUE INDEX acls_user_topic ON acls (username, topic(228));
+	CREATE TABLE users_t (
+	    id INTEGER AUTO_INCREMENT,
+	    username VARCHAR(25) NOT NULL,
+	    pw VARCHAR(512) NOT NULL,
+	    super INT(1) NOT NULL DEFAULT 0,
+	    PRIMARY KEY (id)
+	);
+	CREATE UNIQUE INDEX users_username ON users_t (username);
 
+	CREATE OR REPLACE VIEW users AS
+	  SELECT username, pw, super
+	    FROM users_t;
+
+	CREATE TABLE acls_t (
+	    id INTEGER AUTO_INCREMENT,
+	    user INTEGER NOT NULL,
+	    topic VARCHAR(256) NOT NULL,
+	    rw INTEGER(1) NOT NULL DEFAULT 1,	-- 1 is read, 2 is write, 3 is readwrite, 4 is subscribe
+	    PRIMARY KEY (id),
+	    CONSTRAINT `fk_book_author`
+	      FOREIGN KEY (user) REFERENCES users_t (id)
+	      ON DELETE CASCADE
+	      ON UPDATE CASCADE
+	    );
+	CREATE UNIQUE INDEX acls_user_topic ON acls_t (user, topic);
+
+	CREATE OR REPLACE VIEW acls AS
+	  SELECT a.topic, a.rw,
+		 u.username
+	    FROM users_t u, acls_t a
+	    WHERE a.user = u.id;
+
+    
 The password is generated using the `pw` tool provided by mosquitto-go-auth, which is included in the image at `/opt/bin`. It can be used either within the container using `docker exec -it <mosquitto-container> /opt/bin/pw`. You may also try to copy it from the container onto your Linux host. It should run, since it is only linked against typical Linux libraries, however, I wouldn't do that.
 
 For further information consult the readme and the examples in the mosquitto-go-auth project (https://github.com/iegomez/mosquitto-go-auth or https://github.com/wollud1969/mosquitto-go-auth).