[revscat]

Which seems to imply a static schema, known more-or-less perfectly at the outset, and unchanging thereafter. That is obviously unreasonable. Application data structures change as new requirements arise, and as existing requirements become better understood.

[cle]

> Which seems to imply a static schema, known more-or-less perfectly at the outset, and unchanging thereafter. That is obviously unreasonable.

Is it? Most of AWS runs on NoSQL databases, and continues to ship new features that do not fit into existing schema. This assertion then is clearly incorrect.