sequelize table without column 'id'

If you want to completely disable the primary key for the table, you can use Model.removeAttribute. Be warned that this could cause problems in the future, as Sequelize is an ORM and joins will need extra setup.

const AcademyModule = sequelize.define('academy_module', {
    academy_id: DataTypes.INTEGER,
    module_id: DataTypes.INTEGER,
    module_module_type_id: DataTypes.INTEGER,
    sort_number: DataTypes.INTEGER,
    requirements_id: DataTypes.INTEGER
}, {
    freezeTableName: true
});
AcademyModule.removeAttribute('id');

If you don't define a primaryKey then sequelize uses id by default.

If you want to set your own, just use primaryKey: true on your column.

AcademyModule = sequelize.define('academy_module', {
    academy_id: {
        type: DataTypes.INTEGER,
        primaryKey: true
    },
    module_id: DataTypes.INTEGER,
    module_module_type_id: DataTypes.INTEGER,
    sort_number: DataTypes.INTEGER,
    requirements_id: DataTypes.INTEGER
}, {
    freezeTableName: true
});

If your model does not have an ID column you can use Model.removeAttribute('id'); to get rid of it.

See http://docs.sequelizejs.com/en/latest/docs/legacy/

So in your case it would be

AcademyModule = sequelize.define('academy_module', {
    academy_id: DataTypes.INTEGER,
    module_id: DataTypes.INTEGER,
    module_module_type_id: DataTypes.INTEGER,
    sort_number: DataTypes.INTEGER,
    requirements_id: DataTypes.INTEGER
}, {
    freezeTableName: true
});
AcademyModule.removeAttribute('id');

Note: You seem to be making a join table. Consider making academy_id and module_id primary keys. That way the same link will not be able to appear multiple times, and the database will not create a hidden id column in vain.

For a composite primary key, you should add "primaryKey: true" to all columns part of the primary key. Sequelize considers such columns to be part of a composite primary key.