TABLE CONSTRAINTS

PRIMARY KEY, AUTO INCREMENT, NOT NULL, DEFAULT

CREATE TABLE headphones (_id INTEGER, name TEXT, price INTEGER,
	style INTEGER, in_stock INTEGER, description TEXT);

PRIMARY KEY: Ensure uniqueness. There can only be one primary key per table
AUTO INCREMENT: Automatically calculates new integer when row is added. Useful for IDs

CREATE TABLE headphones (_id INTEGER PRIMARY KEY AUTOINCREMENT,
	name TEXT, 
	price INTEGER,
	style INTEGER, 
	in_stock INTEGER, 
	description TEXT);

CREATE TABLE headphones (_id INTEGER PRIMARY KEY AUTOINCREMENT,
	name TEXT, 
	price INTEGER,
	style INTEGER, 
	in_stock INTEGER, 
	description TEXT);

DEFAULT – When inserting a new row, if no value is defined, the default value given will be used

[slq]
CREATE TABLE headphones (_id INTEGER PRIMARY KEY AUTOINCREMENT,
name TEXT NOT NULL,
price INTEGER,
style INTEGER,
in_stock INTEGER NOT NULL DEFAULT 0,
description TEXT);
[/sql]