1. PostgreSQL copy of all MySQL created and tested.\n 2. Purchase Orders and Sales Orders and stock level management added to MySQL, PostgreSQL, and server and front end code.

static/MySQL/387.0_tri_Shop_Customer.sql

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+
+# Shop Customer
+
+USE PARTSLTD_PROD;
+
+DROP TRIGGER IF EXISTS before_insert_Shop_Customer;
+DROP TRIGGER IF EXISTS before_update_Shop_Customer;
+
+
+DELIMITER //
+CREATE TRIGGER before_insert_Shop_Customer
+BEFORE INSERT ON Shop_Customer
+FOR EACH ROW
+BEGIN
+	IF NEW.created_on <=> NULL THEN
+		SET NEW.created_on = NOW();
+	END IF;
+    IF NEW.created_by <=> NULL THEN
+		SET NEW.created_by = CURRENT_USER();
+	END IF;
+END //
+DELIMITER ;
+
+
+DELIMITER //
+CREATE TRIGGER before_update_Shop_Customer
+BEFORE UPDATE ON Shop_Customer
+FOR EACH ROW
+BEGIN
+	IF OLD.id_change_set <=> NEW.id_change_set THEN
+		SIGNAL SQLSTATE '45000'
+        SET MESSAGE_TEXT = 'New change Set ID must be provided.';
+    END IF;
+    
+    INSERT INTO Shop_Customer_Audit (
+		id_customer,
+        name_field,
+        value_prev,
+        value_new,
+        id_change_set
+    )
+	# Changed name_company
+	SELECT NEW.id_customer, 'name_company', OLD.name_company, NEW.name_company, NEW.id_change_set
+		WHERE NOT OLD.name_company <=> NEW.name_company
+    UNION
+	# Changed name_contact
+	SELECT NEW.id_customer, 'name_contact', OLD.name_contact, NEW.name_contact, NEW.id_change_set
+		WHERE NOT OLD.name_contact <=> NEW.name_contact
+    UNION
+	# Changed department_contact
+	SELECT NEW.id_customer, 'department_contact', OLD.department_contact, NEW.department_contact, NEW.id_change_set
+		WHERE NOT OLD.department_contact <=> NEW.department_contact
+    UNION
+	# Changed id_address
+	SELECT NEW.id_customer, 'id_address', OLD.id_address, NEW.id_address, NEW.id_change_set
+		WHERE NOT OLD.id_address <=> NEW.id_address
+    UNION
+	# Changed phone_number
+	SELECT NEW.id_customer, 'phone_number', OLD.phone_number, NEW.phone_number, NEW.id_change_set
+		WHERE NOT OLD.phone_number <=> NEW.phone_number
+    UNION
+	# Changed email
+	SELECT NEW.id_customer, 'email', OLD.email, NEW.email, NEW.id_change_set
+		WHERE NOT OLD.email <=> NEW.email
+    UNION
+	# Changed id_currency
+	SELECT NEW.id_customer, 'id_currency', OLD.id_currency, NEW.id_currency, NEW.id_change_set
+		WHERE NOT OLD.id_currency <=> NEW.id_currency
+    UNION
+	# Changed active
+	SELECT NEW.id_customer, 'active', OLD.active, NEW.active, NEW.id_change_set
+		WHERE NOT OLD.active <=> NEW.active
+    ;
+END //
+DELIMITER ;
+