Case insensitive data dictionary.

For now, we are going to assume a case insensitive data dictionary.

I'm open to discussing case sensitivity. Support for quoting would need to be added to the SQL pre-processor. There have been times when I've inherited a database from someone who built the database using a drag and drool interface that generated DDL such that `TK_Employee_Job_Position` would forever been capitalized just so. When I encounter this again, I'll probably want to support quoted identifiers myself, but until then I'm going to assume that DDL is created by a tool or person aware of SQL traditions.