Is it necessary to describe relationships in SQL between tables when using yii2?

Question

Yii

Is it necessary to describe relationships in SQL between tables when using yii2? Or will it be enough to do it in the model itself, with hasOne()/hasMany ?

Answer 1

you need to
facilitate it yourself, this can be done by migrations in the framework, but you need to do them manually, but the syntax is lightweight.
If you take Symfony and Doctrine, then there is a command that checks models and configs from them (in annotations or yml files) and automatically generates SQL migrations with the right connections