Database module error handling

[MikeGrace]

How is the database module error handling handled and should it be documented?

https://github.com/jmathai/epiphany/blob/master/docs/Database.markdown

[jmathai]

Yes, it should be documented. One of 3 excpetions are thrown. This is the
heirarchy.

class EpiDatabaseException extends EpiException{}
class EpiDatabaseConnectionException extends EpiDatabaseException{}
class EpiDatabaseQueryException extends EpiDatabaseException{}

https://github.com/jmathai/epiphany/blob/master/src/EpiException.php#L28