According to the data display method of the present invention, one or more parts of the data to be displayed in a display area are displayed in full, while the other parts of the data are displayed in predetermined abridged forms representing the parts of data that are not displayed (i.e. abridged data). When the predetermined abridged form representing the abridged data is selected, one or more parts of the data contents are fully displayed and the other parts are abridged. Further, when the data displayed in full is selected, an input operation for the data is initiated. In addition, the contents of the abridged data that are not displayed are not read from a database, and the first data row and the number of data rows in the abridged data group, are stored.