CREATE DATABASE `IOT`; USE `IoT`; CREATE TABLE IF NOT EXISTS `user` ( `id` int(8) NOT NULL AUTO_INCREMENT, `name` varchar(32) NOT NULL, PRIMARY KEY (id) ); CREATE TABLE IF NOT EXISTS `training` ( `trainingId` int(8) NOT NULL, `trainingDate` DATE NOT NULL, `userId` int(8) NOT NULL, PRIMARY KEY (trainingId), FOREIGN KEY (userId) REFERENCES user(id) ); CREATE TABLE IF NOT EXISTS `lap` ( `lapId` int(8) NOT NULL , `lapTime` int(8) NOT NULL, `trainingId` int(8) NOT NULL, PRIMARY KEY (lapId, trainingId), FOREIGN KEY (trainingId) REFERENCES training(trainingId) );