The HITRAN and GEISA databanks use a line structure of data for storing the spectral line parameters. This structure is convenient for use in applications, but it is practically ineffective in storing data in an information system and is inapplicable for computer data processing. In this paper, we propose a modified structure of data on spectral line parameters. The modification implies the addition of three attributes to physical quantities and the values of the spectral line widths broadened by a buffer gas as well as the temperature dependence of these widths. The list of buffer gases includes water vapor, argon, neon, carbon dioxide, and so on. The modified structure of the data is used for collective processing of these data. A set of operations is proposed for use in compilation of the compound databank. The implementation of the operations is discussed for processing the spectral line parameters stored.