A remote access device is disclosed for capturing, digitizing and communicating video signals from a host computer to a remote computer. When generally formulated to disinfect a catheter, the antimicrobial substance comprises water and between approximately 10 and 200 mg of tetrasodium EDTA for each milliliter of water. Each sugar pellet comprises sugar in an amount of at least about 15% by weight, based on the total weight of the sugar pellet. In preferred embodiments, a query governor estimates whether resources to execute a query will exceed a threshold over all or a combination of database partitions.