Added the template SQL script for creating the inventory database's tables.

scripts/table_template.sql

@@ -0,0 +1,86 @@
+-- Version 0.5.5.1 Removed character length restrictions as the docs for POSTGRESQL recommend not specifying a limit.
+-- Version 0.6.0.0 Changed the numeric values to integers as Golang doesn't have a native decimal type.
+
+DROP TABLE IF EXISTS property_value;
+DROP TABLE IF EXISTS property;
+DROP TABLE IF EXISTS property_data_type;
+DROP TABLE IF EXISTS item_component;
+DROP TABLE IF EXISTS item;
+DROP TABLE IF EXISTS subcategory;
+DROP TABLE IF EXISTS category;
+
+CREATE TABLE property_data_type (
+	property_data_type_id INT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+	property_data_type CHARACTER VARYING UNIQUE NOT NULL
+);
+
+INSERT INTO property_data_type (property_data_type) VALUES ('Money');
+INSERT INTO property_data_type (property_data_type) VALUES ('Text');
+INSERT INTO property_data_type (property_data_type) VALUES ('DateTime');
+INSERT INTO property_data_type (property_data_type) VALUES ('Number');
+
+CREATE TABLE category (
+	category_id INT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+	category_name CHARACTER VARYING UNIQUE NOT NULL
+);
+
+CREATE TABLE subcategory (
+	subcategory_id INT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+	subcategory_name CHARACTER VARYING UNIQUE NOT NULL,
+	category_id INT NOT NULL REFERENCES category(category_id)
+);
+
+CREATE TABLE item (
+	item_id INT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+	item_name CHARACTER VARYING NOT NULL,
+	value_cents INT DEFAULT 0,
+	purchase_cost_cents INT DEFAULT 0,
+	date_aquired TIMESTAMP WITH TIME ZONE,
+	description CHARACTER VARYING,
+	notes CHARACTER VARYING,
+	sold_for_cents INT DEFAULT 0,
+	sold_to CHARACTER VARYING, -- Could be a pointer TO a TABLE OF comtacts.
+	category_id INT NOT NULL REFERENCES category(category_id),
+	subcategory_id INT REFERENCES subcategory(subcategory_id)
+);
+
+-- Example: property_name of "Author" which maps to property_data_type of "Text".
+CREATE TABLE property (
+	property_id INT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+	property_name CHARACTER varying NOT NULL,
+	property_type_id INT NOT NULL REFERENCES property_data_type(property_data_type_id),
+	category_id INT NOT NULL REFERENCES category(category_id),
+	subcategory_id INT REFERENCES subcategory(subcategory_id)
+);
+
+-- Allows grouping items together, i.e. Alienware Desktop -> CPU, HDDs / SSDs, Motherboard, etc.
+CREATE TABLE item_component (
+	item_component_id INT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+	item_id INT NOT NULL REFERENCES item(item_id),
+	item_subcomponent_id INT NOT NULL REFERENCES item(item_id)
+);
+
+CREATE TABLE property_value (
+	property_value_id INT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+	item_id INT NOT NULL REFERENCES item(item_id),
+	property_id INT NOT NULL REFERENCES property(property_id),
+	value CHARACTER VARYING NOT NULL
+);
+
+INSERT INTO category (category_name) VALUES ('Books');
+INSERT INTO category (category_name) VALUES ('Electronics');
+INSERT INTO category (category_name) VALUES ('Appliances');
+INSERT INTO category (category_name) VALUES ('Kitchenware');
+
+INSERT INTO subcategory(subcategory_name, category_id) VALUES ('PCIe Cards', 2);
+INSERT INTO subcategory(subcategory_name, category_id) VALUES ('Laptops', 2);
+INSERT INTO subcategory(subcategory_name, category_id) VALUES ('Desktops', 2);
+INSERT INTO subcategory(subcategory_name, category_id) VALUES ('CPUs', 2);
+INSERT INTO subcategory(subcategory_name, category_id) VALUES ('Hard Drives', 2);
+INSERT INTO subcategory(subcategory_name, category_id) VALUES ('Switches', 2);
+INSERT INTO subcategory(subcategory_name, category_id) VALUES ('Routers', 2);
+INSERT INTO subcategory(subcategory_name, category_id) VALUES ('CPU Coolers', 2);
+INSERT INTO subcategory(subcategory_name, category_id) VALUES ('USB Devices', 2);
+INSERT INTO subcategory(subcategory_name, category_id) VALUES ('Oscilloscopes', 2);
+INSERT INTO subcategory(subcategory_name, category_id) VALUES ('Heaters', 3);
+INSERT INTO subcategory(subcategory_name, category_id) VALUES ('Eletric Kettles', 4);