A database dynamic partial uncompression mechanism determines when to dynamically uncompress one or more compressed portions of a database table that also includes uncompressed portions. Catheter assemblies according to the present invention can include a handle assembly, an introducer sheath, and a distal tip assembly. The first variation of visor would replace the standard sun visor that is located at the top of a standard windshield immediately above an operator’s line of sight while operating a particular vehicle. As such, the user transmits instructions to view, create, update, delete, or otherwise modify portions of data through the local interface and subsequently through the underlying network. The invention also relates to corresponding methods, user equipment, computer programs and computer program products. By using several reconfigurable PV systems a variety of batteries with different charged voltages may be charged simultaneously while utilizing substantially the full capacity of the PV system to charge batteries.