diff --git a/sql/README.md b/sql/README.md
deleted file mode 100644
index b667e475..00000000
--- a/sql/README.md
+++ /dev/null
@@ -1,12 +0,0 @@
-# Introduction
-This code aims to be based on ISO-compliant, therefore database-agnostic.
-However, Data Definition Language (DDL) usually involves vendor variants.
-
-# Setup
-Create database structure: see ./structure/<VARIANT>/create.sql
-Load test data: see ./test/data/load.sql
-
-# Execution
-Execute SQL script: see /code/update_quality.sql
-TODO: Introduce test framework - vendor specific
-
diff --git a/sql/code/update_quality.sql b/sql/code/update_quality.sql
deleted file mode 100644
index 9da22bd5..00000000
--- a/sql/code/update_quality.sql
+++ /dev/null
@@ -1,69 +0,0 @@
-UPDATE item
-SET
-    quality = quality - 1
-WHERE 1=1
-    AND ( name <> 'Aged Brie'  AND  name <> 'Backstage passes to a TAFKAL80ETC concert')
-    AND quality > 0
-    AND name <> 'Sulfuras, Hand of Ragnaros'
-;
-
-UPDATE item
-SET
-    quality = quality + 1
-WHERE  1=1
-  AND  NOT  ( name <> 'Aged Brie'  AND  name <> 'Backstage passes to a TAFKAL80ETC concert')
-  AND quality < 50
-  AND name = 'Backstage passes to a TAFKAL80ETC concert'
-  AND sellIn < 11
-  AND quality < 50
-;
-
-UPDATE item
-SET
-    quality = quality + 1
-WHERE  1=1
-  AND  NOT  ( name <> 'Aged Brie'  AND  name <> 'Backstage passes to a TAFKAL80ETC concert')
-  AND quality < 50
-  AND name = 'Backstage passes to a TAFKAL80ETC concert'
-  AND sellIn < 6
-  AND quality < 50
-;
-
-UPDATE item
-SET
-    sellIn = sellIn - 1
-WHERE  1=1
-  AND  name <> 'Sulfuras, Hand of Ragnaros'
-;
-
-UPDATE item
-SET
-    quality = quality - 1
-WHERE  1=1
-  AND sellIn < 0
-  AND name <> 'Aged Brie'
-  AND name <> 'Backstage passes to a TAFKAL80ETC concert'
-  AND quality > 0
-  AND name <> 'Sulfuras, Hand of Ragnaros'
-;
-
-UPDATE item
-SET
-    quality = quality - quality
-WHERE  1=1
-  AND sellIn < 0
-  AND name <> 'Aged Brie'
-  AND NOT (name <> 'Backstage passes to a TAFKAL80ETC concert')
-;
-
-UPDATE item
-SET
-    quality = quality + 1
-WHERE  1=1
-  AND sellIn < 0
-  AND NOT (name <> 'Aged Brie')
-  AND quality < 50
-  AND name <> 'Sulfuras, Hand of Ragnaros'
-;
-
-COMMIT;
\ No newline at end of file
diff --git a/sql/structure/postgreSQL/create.sql b/sql/structure/postgreSQL/create.sql
deleted file mode 100644
index 5ce4d245..00000000
--- a/sql/structure/postgreSQL/create.sql
+++ /dev/null
@@ -1,9 +0,0 @@
-CREATE DATABASE gilded_rose;
-
-\connect gilded_rose;
-
-CREATE TABLE item (
- name    CHARACTER VARYING(100) NOT NULL,
- sellIn  INTEGER,
- quality INTEGER                NOT NULL
-);
diff --git a/sql/test/data/load.sql b/sql/test/data/load.sql
deleted file mode 100644
index 7a142212..00000000
--- a/sql/test/data/load.sql
+++ /dev/null
@@ -1,15 +0,0 @@
-DELETE FROM item;
-
-INSERT INTO item (name, sellIn, quality) VALUES ('+5 Dexterity Vest', 10, 20);
-INSERT INTO item (name, sellIn, quality) VALUES ('Aged Brie', 2, 0);
-INSERT INTO item (name, sellIn, quality) VALUES ('Elixir of the Mongoose', 5, 7);
-INSERT INTO item (name, sellIn, quality) VALUES ('Sulfuras, Hand of Ragnaros', 0, 80);
-INSERT INTO item (name, sellIn, quality) VALUES ('Sulfuras, Hand of Ragnaros', -1, 80);
-INSERT INTO item (name, sellIn, quality) VALUES ('Backstage passes to a TAFKAL80ETC concert', 15, 20);
-INSERT INTO item (name, sellIn, quality) VALUES ('Backstage passes to a TAFKAL80ETC concert', 10, 49);
-INSERT INTO item (name, sellIn, quality) VALUES ('Backstage passes to a TAFKAL80ETC concert', 5, 49);
-
--- this conjured item does not work properly yet
-INSERT INTO item (name, sellIn, quality) VALUES ('Conjured Mana Cake', 3, 6);
-
-COMMIT;