A plant watering device having user-selectable water delivery apertures. A plurality of microcomposite subelements are created from the microcomposite element, with each microcomposite subelement having the first electrically conductive pattern. A fan is configured to draw air through the inlet and the dust cup and to discharge air through the outlet. The distal shaft portion may comprise a distally-facing transition surface at a proximal end of the distal shaft portion. Included is: creating, using a content manager, an end of retention policy for a content in a database management system (DBMS; and creating, based on the end of retention policy, a stored procedure in the DBMS for managing the end of retention policy.