A textual search index is used to identify data objects that have numerical properties that satisfy search queries. The classification section classifies quantization indices contained in input code data into a plurality of groups. The universal remote control additionally includes a wireless communication mechanism that is configured to provide communications between the processing unit and an appliance or computer program running on a computer system. When the user selects a column in the database, a filtered display mechanism displays only those columns or records that satisfy the portion of the query already constructed.