diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..e7d2816
Binary files /dev/null and b/.DS_Store differ
diff --git a/README.md b/README.md
index 9e4e487..fc7c43a 100644
--- a/README.md
+++ b/README.md
@@ -19,4 +19,7 @@ GIT Repository for for the Module CDS-104
 
 ## GROUP BY
 
-## HAVING
\ No newline at end of file
+## HAVING
+
+## JOIN
+
diff --git a/movies/.DS_Store b/movies/.DS_Store
new file mode 100644
index 0000000..5008ddf
Binary files /dev/null and b/movies/.DS_Store differ
diff --git a/movies/order_by.sql b/movies/order_by.sql
new file mode 100644
index 0000000..a4638e7
--- /dev/null
+++ b/movies/order_by.sql
@@ -0,0 +1 @@
+SELECT * FROM movies ORDER BY title DESC;
\ No newline at end of file
diff --git a/murder_mystery/murder_mystery b/murder_mystery/murder_mystery
new file mode 100644
index 0000000..b309e9d
Binary files /dev/null and b/murder_mystery/murder_mystery differ
diff --git a/murder_mystery/querys.sql b/murder_mystery/querys.sql
new file mode 100644
index 0000000..787f24b
--- /dev/null
+++ b/murder_mystery/querys.sql
@@ -0,0 +1,21 @@
+SELECT * FROM crime_scene_report WHERE city = 'SQL City' AND date = 20180115 AND type = 'murder';
+-- Security footage shows that there were 2 witnesses. The first witness lives at the last house on "Northwestern Dr". 
+-- The second witness, named Annabel, lives somewhere on "Franklin Ave".
+
+-- first witness
+SELECT * FROM person WHERE address_street_name = 'Northwestern Dr' ORDER BY address_number DESC LIMIT 1;
+-- id 14887 name Morty Schapiro license_id 118009 ssn 111564949
+
+SELECT transcript FROM interview WHERE person_id = 14887;
+-- I heard a gunshot and then saw a man run out. He had a "Get Fit Now Gym" bag. The membership number on the bag started with "48Z". 
+-- Only gold members have those bags. The man got into a car with a plate that included "H42W".
+
+SELECT * FROM get_fit_now_member WHERE id LIKE '48Z%' AND membership_status = 'gold';
+SELECT * FROM drivers_license WHERE plate_number LIKE '%H42W%';
+
+-- second witness
+SELECT * FROM person WHERE name LIKE '%Annabel%' AND address_street_name = 'Franklin Ave';
+-- id 16371 name Annabel Miller license_id 490173 ssn 318771143
+SELECT transcript FROM interview WHERE person_id = 16371;
+-- I saw the murder happen, and I recognized the killer from my gym when I was working out last week on January the 9th.
+SELECT * FROM get_fit_now_check_in WHERE check_in_date = 20180109 AND membership_id LIKE '48Z%'
diff --git a/normalformen/Übung_NF.xlsx b/normalformen/Übung_NF.xlsx
new file mode 100644
index 0000000..50b5441
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diff --git a/shop/ctreate_table.sql b/shop/ctreate_table.sql
new file mode 100644
index 0000000..ad47f71
--- /dev/null
+++ b/shop/ctreate_table.sql
@@ -0,0 +1,59 @@
+/*CREATE TABLE kunde
+(
+	id SERIAL PRIMARY KEY,
+	vorname CHARACTER VARYING NOT NULL,
+	name CHARACTER VARYING NOT NULL,
+	email CHARACTER VARYING NOT NULL,
+	passwort CHARACTER VARYING NOT NULL
+);
+
+CREATE TABLE bestellung
+(
+	id SERIAL PRIMARY KEY,
+	datum DATE
+);
+
+CREATE TABLE bestellposition
+(
+	bestellung_id INTEGER,
+	produkt_id INTEGER,
+	anzahl INTEGER
+);
+
+CREATE TABLE produkte
+(
+	id SERIAL PRIMARY KEY,
+	name CHARACTER VARYING NOT NULL,
+	beschreibung CHARACTER VARYING NOT NULL,
+	preis NUMERIC(8,2) NOT NULL,
+	lagerbestand INTEGER NOT NULL
+);*/
+
+CREATE TABLE kunde
+(
+id INTEGER PRIMARY KEY,
+name CHARACTER VARYING NOT NULL,
+email CHARACTER VARYING NOT NULL,
+password CHARACTER VARYING NOT NULL
+);
+CREATE TABLE bestellung
+(
+id INTEGER PRIMARY KEY,
+kunde_id INTEGER NOT NULL,
+datum DATE NOT NULL
+);
+
+CREATE TABLE produkt
+(
+id INTEGER PRIMARY KEY,
+name CHARACTER VARYING NOT NULL,
+beschreibung CHARACTER VARYING NOT NULL,
+anzahl INTEGER NOT NULL,
+preis NUMERIC(8,2) NOT NULL
+);
+CREATE TABLE bestellung_produkt
+(
+bestellung_id INTEGER NOT NULL,
+produkt_id INTEGER NOT NULL,
+anzahl INTEGER NOT NULL
+);
\ No newline at end of file
diff --git a/shop/insert.sql b/shop/insert.sql
new file mode 100644
index 0000000..021e31f
--- /dev/null
+++ b/shop/insert.sql
@@ -0,0 +1,20 @@
+INSERT INTO kunde VALUES
+(1, 'Ingmar', 'ingmar@example.com', 'FN239v_d32%nsej3'),
+(3, 'Maria', 'maria@example.com', 'abc_%&'),
+(4, 'John', 'john@example.com', 'KeepCalm'),
+(2, 'Peter', 'peter@example.com', 'lskdfjlskdfj');
+INSERT INTO produkt VALUES
+(1, 'Keyboard', 'QUERTZ', 12, 29.99),
+(2, 'Notebook', 'Standard', 1, 1299.00),
+(3, 'Monitor', 'Flat', 5, 389.90),
+(4, 'Maus', 'Kabellos', 2, 19.00);
+INSERT INTO bestellung VALUES
+(1, 1, '2022-01-03'),
+(2, 1, '2022-01-07'),
+(3, 2, '2022-01-09');
+INSERT INTO bestellung_produkt VALUES
+(1, 1, 2),
+(1, 2, 1),
+(2, 3, 4),
+(3, 2, 2),
+(3, 4, 1);
\ No newline at end of file
diff --git a/shop/join.sql b/shop/join.sql
new file mode 100644
index 0000000..50ddd33
--- /dev/null
+++ b/shop/join.sql
@@ -0,0 +1,10 @@
+SELECT bestellung.id, kunde.name
+FROM bestellung
+JOIN kunde ON kunde.id = bestellung.kunde_id;
+
+SELECT produkt.id, produkt.name, bestellung_produkt.anzahl 
+FROM produkt 
+JOIN bestellung_produkt ON produkt.id = bestellung_produkt.bestellung_id;
+
+SELECT * FROM bestellung, produkt
+JOIN bestellung_produkt on bestellung.id = bestellung_produkt.bestellung_id;
\ No newline at end of file