Application code have one way of describing data and their relationships. RDBMSes have a very different way of describing data and their relationships. At some

Application code have one way of describing data and their relationships. RDBMSes have a very different way of describing data and their relationships. At some point, you are going to have to reconcile the differences between the two worlds - this is the so-called "object-relational impedence mismatch". Unfortunately, even if you choose to reject ORMs and go SQL, you're still going to have solve this problem at some point, and it will not be pleasant.