flush first draft of schema for second draft of a production-ready script
renamed files to conform to new aesthetic naming scheme
CRUD in the create scripts
don't populate the object at the same time as when you created it
table order was renamed to purchaseOrder. renamed the create script as well
ct.purchaseOrder.pgsql: corrected syntax error in unique constraint
table order was renamed to purchaseOrder. renamed the insert script accordingly
ct.purchaseOrder.pgsql: use named not-null constraints for easier manipulation during initialization