backend/data/migrations/20200502193443_availibility.js

exports.up = (knex) => {
	return knex.schema.createTable('availibility', (table) => {
		table.increments('id').primary();

		// Reference to participant composite primary key
		table.uuid('meeting_id').unsigned();
		table.integer('account_id').unsigned();
		table
			.foreign(['account_id', 'meeting_id'])
			.references(['account_id', 'meeting_id'])
			.on('participant')
			.onDelete('cascade');

		table.integer('possible_date_id');
		table
			.foreign('possible_date_id')
			.references('possible_date.id')
			.onDelete('cascade');
		table.boolean('preference').notNullable();
		table.time('start_time').notNullable();
		table.time('end_time').notNullable();
		table.string('timezone').notNullable();
		table.timestamps(true, true);
	});
};

exports.down = (knex) => {
	return knex.schema.dropTable('availibility');
};