feat: Add foreign key constraint

- Add foreign key constraint into tables.

issue: #7

BE/src/main/resources/schema.sql

@@ -1,68 +1,59 @@
-CREATE TABLE IF NOT EXISTS `section`
-(
-    id  BIGINT AUTO_INCREMENT PRIMARY KEY,
+CREATE TABLE IF NOT EXISTS `section` (
+    `id`  BIGINT AUTO_INCREMENT PRIMARY KEY,
     `name` VARCHAR(50)
 );
 
-CREATE TABLE IF NOT EXISTS category
-(
-    id  BIGINT AUTO_INCREMENT PRIMARY KEY,
+CREATE TABLE IF NOT EXISTS category (
+    `id`  BIGINT AUTO_INCREMENT PRIMARY KEY,
     `name` VARCHAR(50)
-    );
+);
 
-CREATE TABLE IF NOT EXISTS item
-(
-    id  BIGINT AUTO_INCREMENT PRIMARY KEY,
-    section BIGINT,
-    category BIGINT,
-    alt VARCHAR(50),
-    top_image VARCHAR(65536),
-    title VARCHAR(50),
-    description VARCHAR(500),
-    n_price DECIMAL,
-    s_price DECIMAL,
-    delivery_fee DECIMAL,
-    stock int
+CREATE TABLE IF NOT EXISTS item (
+    `id`  BIGINT AUTO_INCREMENT PRIMARY KEY,
+    `section` BIGINT,
+    `category` BIGINT,
+    `alt` VARCHAR(50),
+    `top_image` VARCHAR(255),
+    `title` VARCHAR(50),
+    `description` VARCHAR(500),
+    `n_price` DECIMAL,
+    `s_price` DECIMAL,
+    `delivery_fee` DECIMAL,
+    `stock` int,
+    CONSTRAINT item_section_foreign_key FOREIGN KEY (`section`) REFERENCES `section`(id),
+    CONSTRAINT item_category_foreign_key FOREIGN KEY (`category`) REFERENCES `category`(id)
 );
 
-CREATE TABLE IF NOT EXISTS detail_section
-(
-    item BIGINT,
-    item_key INT,
-    url VARCHAR(65536)
+CREATE TABLE IF NOT EXISTS detail_section (
+    `item` BIGINT,
+    `item_key` INT,
+    `url` VARCHAR(255),
+    CONSTRAINT detail_section_item_foreign_key FOREIGN KEY (`item`) REFERENCES `item`(id)
 );
 
-CREATE TABLE IF NOT EXISTS thumb_image
-(
-    item BIGINT,
-    item_key INT,
-    url VARCHAR(65536)
+CREATE TABLE IF NOT EXISTS thumb_image (
+    `item` BIGINT,
+    `item_key` INT,
+    `url` VARCHAR(255),
+    CONSTRAINT thumb_image_item_foreign_key FOREIGN KEY (`item`) REFERENCES `item`(id)
 );
 
 CREATE TABLE IF NOT EXISTS badge (
-    item BIGINT,
-    badge_type CHAR(10)
+    `item` BIGINT,
+    `badge_type` CHAR(10),
+    CONSTRAINT badge_item_foreign_key FOREIGN KEY (`item`) REFERENCES `item`(id)
 );
 
 
-CREATE TABLE IF NOT EXISTS delivery_type
-(
-    item BIGINT,
-    delivery_type_name CHAR(10)
+CREATE TABLE IF NOT EXISTS delivery_type (
+    `item` BIGINT,
+    `delivery_type_name` CHAR(10),
+    CONSTRAINT delivery_type_item_foreign_key FOREIGN KEY (`item`) REFERENCES `item`(id)
 );
 
 
-CREATE TABLE IF NOT EXISTS delivery_day
-(
-    item BIGINT,
-    `the_day_of_week` CHAR(3)
+CREATE TABLE IF NOT EXISTS delivery_day (
+    `item` BIGINT,
+    `the_day_of_week` CHAR(3),
+    CONSTRAINT delivery_day_item_foreign_key FOREIGN KEY (`item`) REFERENCES `item`(id)
 );
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