An improved data access layer architecture enables database connection pooling or multiplexing across machine boundaries. The present invention further provides a composition comprising at least one compound of the present invention and a pharmaceutically acceptable carrier, alone or in combination with at least one additional active agent. The electrical circuits so formed of single or multiple printed layers can comprise or compose transistor devices, including thin film transistors, multiple transistor circuits or assemblies, or other electrical devices, for example batteries, sensors, displays, memory arrays, and the like. A titanium layer is then deposited and subjected to a nitrogen plasma process. The capillary element is then segmented into at least first and second separate capillary element portions at an intermediate point of the capillary element and the continuous layer.