diff --git a/15.html b/15.html
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+++ b/15.html
@@ -51,18 +51,7 @@
 
 				<section  data-transition="slide" data-background="#b5533c" data-background-transition="convex"> <h3>lampp stack</h3> </section>
 
-				<section>
-					<ul>
-						<li>mysql basics</li>
-						<li>wordpress tabellen ansehen</li>
-						<li>apache vhost</li>
-						<li>letsencrypt</li>
-						<li></li>
-						<li></li>
-						<li></li>
-					</ul>
-				</section>
-
+				
 				<section>
 					<pre><code class="bash">~$ sudo apt install apache2 mysql-server phpmyadmin</code></pre>
 
@@ -80,6 +69,105 @@ MariaDB [(none)]> \q
 					</ul>
 				</section>
 
+				<section>
+					<h3>mysql</h3>
+				</section>
+
+				<section>
+					Verbindung aufnehmen:
+					<pre><code class="bash">~$ sudo mysql
+# oder:
+~$ mysql -u BENUTZERNAME -p -h localhost
+</code></pre>
+				</section>
+
+				<section>Datenbank erstellen
+					<pre><code class="sql">CREATE DATABASE IF NOT EXISTS test;
+
+USE test;
+
+CREATE TABLE IF NOT EXISTS books (
+  BookID INT NOT NULL PRIMARY KEY AUTO_INCREMENT, 
+  Title VARCHAR(100) NOT NULL, 
+  SeriesID INT, AuthorID INT);
+
+CREATE TABLE IF NOT EXISTS authors 
+(id INT NOT NULL PRIMARY KEY AUTO_INCREMENT);
+
+CREATE TABLE IF NOT EXISTS series 
+(id INT NOT NULL PRIMARY KEY AUTO_INCREMENT);
+
+INSERT INTO books (Title,SeriesID,AuthorID) 
+VALUES('The Fellowship of the Ring',1,1), 
+      ('The Two Towers',1,1), ('The Return of the King',1,1),  
+      ('The Sum of All Men',2,2), ('Brotherhood of the Wolf',2,2), 
+      ('Wizardborn',2,2), ('The Hobbbit',0,1);</code></pre>
+				</section>
+
+				<section>Tabellen anzeigen
+					<pre><code class="sql">
+SHOW TABLES;
+
++----------------+
+| Tables_in_test |
++----------------+
+| authors        |
+| books          |
+| series         |
++----------------+
+3 rows in set (0.00 sec)
+					</code></pre>
+				</section>
+
+
+				<section>
+					<pre><code  class="sql">DESCRIBE books;
+
++----------+--------------+------+-----+---------+----------------+
+| Field    | Type         | Null | Key | Default | Extra          |
++----------+--------------+------+-----+---------+----------------+
+| BookID   | int(11)      | NO   | PRI | NULL    | auto_increment |
+| Title    | varchar(100) | NO   |     | NULL    |                |
+| SeriesID | int(11)      | YES  |     | NULL    |                |
+| AuthorID | int(11)      | YES  |     | NULL    |                |
++----------+--------------+------+-----+---------+----------------+
+					</code></pre>
+				</section>
+
+				<section>
+					Daten anzeigen:
+					<pre><code  class="sql">SELECT * FROM books;
+
++--------+----------------------------+----------+----------+
+| BookID | Title                      | SeriesID | AuthorID |
++--------+----------------------------+----------+----------+
+|      1 | The Fellowship of the Ring |        1 |        1 |
+|      2 | The Two Towers             |        1 |        1 |
+|      3 | The Return of the King     |        1 |        1 |
+|      4 | The Sum of All Men         |        2 |        2 |
+|      5 | Brotherhood of the Wolf    |        2 |        2 |
+|      6 | Wizardborn                 |        2 |        2 |
+|      7 | The Hobbbit                |        0 |        1 |
++--------+----------------------------+----------+----------+
+7 rows in set (0.00 sec)</code></pre></section>
+
+				<section>Daten einfügen:
+					<pre><code class="sql">INSERT INTO books (Title, SeriesID, AuthorID)
+VALUES ("Lair of Bones", 2, 2);
+
+Query OK, 1 row affected (0.00 sec)</code></pre>
+					<pre><code>SELECT * FROM books;</code></pre></section>
+
+				<section>
+					Daten modifizieren:
+					<pre><code class="sql">UPDATE books 
+SET Title = "The Hobbit" 
+WHERE BookID = 7;
+
+Query OK, 1 row affected (0.00 sec)
+Rows matched: 1  Changed: 1  Warnings: 0</code></pre>
+				</section>
+
 				
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