A record having a fixed length data portion and a variable length data portion is stored in memory units, each capable of being inputtedoutputted independently, in unit of sub-record while the fixed length data portion is divided into a plurality of fixed length sub-records each having the same length and the variable length data portion is made one variable length sub-record. For example, the method receives a block of pixels from the input image, and selects a coding mode for the block of pixels based on at least one coding mode of at least one neighbor block of the block of pixels. The computerized system further provides the agents with additional filtered information via the communications network identifying buyers for particular goods and current market selling prices, enabling the agents to efficiently match goods purchased from a seller to a buyer’s demand while achieving a desired profit margin.