Many organizations that built applications 10-20 years ago had a very data-oriented approach to application architecture. Although mainly due to the particularities of Oracle-based systems, it became commonplace to couple the application to the database. (In the case of Oracle-connected applications, stored procedures and triggers coupled the database to the application.)
But what seemed like a good idea then causes a huge issue now when you move those applications and data to the cloud and want to leave the expensive legacy databases behind.
