* MEDIUM
- implement table creation w/ complex columns
* MEDIUM
-- implement write support for properties
- * EASY
- implement table, column, index renaming
* EASY
- implement table, column, index deletion
- implement page buffering in PageChannel
* need to implement logical flushing in update code (startUpdate/finishUpdate)
- implement "lazy" usage maps (load on first usage)?
-- add typed getter methods to Row
+- add typed getter methods to Row, PropertyMap