new directory for sql files

sql/create_db.sql

@@ -0,0 +1,7 @@
+CREATE TABLE customers(
+    ID              INT PRIMARY KEY NOT NULL
+    , NAME          VARCHAR(10) NOT NULL
+    , SURNAME       VARCHAR(20) NOT NULL
+    , CITY          VARCHAR(20) NOT NULL
+    , PLZ           INTEGER(4) NOT NULL
+)

sql/insert_data.sql

@@ -0,0 +1,4 @@
+INSERT INTO customers VALUES(1, 'Egger', 'Stefan', 'St. Gallen', '9000');
+INSERT INTO customers VALUES(2, 'Müller', 'Sepp', 'St.Gallen', '9000');
+INSERT INTO customers VALUES(3, 'Kurt', 'Kurtl', 'St. gallen', '9000');
+INSERT INTO customers VALUES(4, 'Kurt', 'Kurtl', 'St.gallen', '9000');

sql/show_all.sql

@@ -0,0 +1 @@
+SELECT * from customers;