OTL is a C++ database access interface (ODBC,Oracle,DB2...)
OTL is an advanced database access library that applies C++ well founded concepts to a difficult, practical task, in an efficient way. It's designed as a combination of a C++ template framework and OTL-adapters. The framework is a generic implementation of the concept of OTL streams. The OTL-adapters are thin wrappers around the database APIs and are used as class type parameters to be passed into the template framework.