GetDMLModel handles INSERT, UPDATE, and DELETE in mock DB models.

GetSelectModel handles selecting a single or all items in mock DB model.

columns are prefixed with "o" since we used sqlstruct to generate them.

TestAPI tests a group of Api's test.

TestDB tests a single DB models.

TestDB tests a single DB models.

TestDMLs tests a model for equality of commands arguments, and given argumants, also it checks if given type is the same is the command.