公开(公告)号：CA948322A

公开(公告)日：1974-05-28

申请号：CA130478

申请日：1971-12-20

Applicant: IBM

Inventor： BERGER DAVID A ,  JOHNSON DONAVON W ,  SIMPSON JACK W ,  MCCONNELL ROBERT L

IPC: B41J3/46 ,  B41J5/40 ,  G06F17/21

公开(公告)号：FR2378310A1

公开(公告)日：1978-08-18

申请号：FR7739918

申请日：1977-12-23

Applicant: IBM

Inventor： BERGER DAVID A ,  WELCH JOHN W

IPC: G06F7/24 ,  G06F17/30 ,  G06F7/08

Abstract: A system for sorting records of a file to find the record in the file having the highest or lowest data in a first field of the records, provided that the record qualifies to be sorted in accordance with the data in a second field of the records. A plurality of such records are stored on a plurality of blocks of a segmented serial storage device. Random access memory used by the system to accomplish the qualifying and sorting is a small fraction of the size of the file. In the preferred embodiment, a multiplicity of qualifying fields and sort fields may be specified. The system may typically be used, for example, to provide names, addresses and other variable text to be merged with form letter text in a printing system to sequentially print automatic form letters in the alphabetical or zip code order of their intended recipients. This information can also be used to list a qualified sublist of a master file in the order specified by the sort information.

公开(公告)号：CA1108762A

公开(公告)日：1981-09-08

申请号：CA295495

申请日：1978-01-24

Applicant: IBM

Inventor： BERGER DAVID A ,  WELCH JOHN W

IPC: G06F7/24 ,  G06F17/30 ,  G06F7/08

Abstract: FILE QUALIFYING AND SORTING SYSTEM A system for sorting records of a file to find the record in the file having the highest or lowest data in a first field of the records, provided that the record qualifies to be sorted in accordance with the data in a second field of the records. A plurality of such records are stored on a plurality of blocks on a segmented serial storage device. Random access memory used by the system to accomplish the qualifying and sorting is a small fraction of the size of the file. In the preferred embodiment, a multiplicity of qualifying fields and sort fields may be specified. The system may typically be used, for example, to provide names, addresses and other variable text to be merged with form letter text in a printing system to sequentially print automatic form letters in the alphabetical or zip code order of their intended recipients. This information can also be used to list a qualified sublist of a master file in the order specified by the sort information.