but with a Clear() method
the dynamic allocated buffer can be easily reused
added: DbTextStream a special version of a stream
used to create a database string query
everything is escaped by default
added: DbBase a base class with some basic methods for communicating
with the database
added: DbConn a class for managing connection to the database
changed: some refactoring in Db class
git-svn-id: svn://ttmath.org/publicrep/winix/trunk@655 e52654a7-88a9-db11-a3e9-0013d4bc506e