.\" Copyright (c) 1990, 1993
.\"	The Regents of the University of California.  All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"	This product includes software developed by the University of
.\"	California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\"    may be used to endorse or promote products derived from this software
.\"    without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\"
.\"	@(#)recno.3	8.5 (Berkeley) 8/18/94
.\"
.\" Japanese Version Copyright (c) 1999 Shouichi Saito
.\"	all rights reserved.
.\" Translated Mon Jul 26 12:18:39 JST 1999
.\"	by Shouichi Saito <ss236rx@ymg.urban.ne.jp>
.\" Proofed Tue Aug 19 1999 by NAKANO Takeo <nakano@apm.seikei.ac.jp>
.\"
.\"WORD:	access method		᥽å
.\"WORD:	pad character		ʸ
.TH RECNO 3 1994-08-18 "" "Linux Programmer's Manual"
.UC 7
.SH ̾
recno \- 쥳ֹǡ١ؤΥ᥽å
.SH 
.nf
.ft B
#include <sys/types.h>
#include <db.h>
.ft R
.fi
.SH 
롼
.BR dbopen (3)
ϥǡ١եФ饤֥ꥤ󥿡եǤ롣
ݡȤƤեեޥåȤΰĤˡ
쥳ֹե (record number file: recno file) 롣
ǡ١ؤΥ᥽åɤ˴ؤŪʵҤ
.BR dbopen (3),
˽񤫤Ƥ롣
Υޥ˥奢ڡǤ recno ͭξˤĤƤΤߵҤ롣
.PP
쥳ֹǡ¤ϡեåȤʥե˳Ǽ줿
Ĺ/Ĺ쥳ɤʤꡢ쥳ֹǥ롣
쥳ֹ 5 С쥳ֹ 1  4 ¸ߤ롣
쥳ֹ 1 ȡ쥳ֹ 5  4 դؤ졢
ư롣쥳ֹ 1 ʹߤΤΤϰķ夬櫓Ǥ롣
.PP
.BR dbopen (3)
ǻȤ recno ᥽åɤͭΥǡ¤Τϡ
.I <db.h>
󥯥롼ɥեǼΤ褦Ƥ롣
.PP
.in +4n
.nf
typedef struct {
    unsigned long flags;
    unsigned int  cachesize;
    unsigned int  psize;
    int           lorder;
    size_t        reclen;
    unsigned char bval;
    char         *bfname;
} RECNOINFO;
.fi
.in
.PP
ι¤ΤǤʲ˼
.TP
flags
flag ͤ
ʲͤΤ줫¤ǻꤵ롣
.RS
.TP
.B R_FIXEDLEN
쥳ĹǤꡢХȶڤǤϤʤ
¤Τ
.I reclen
ϥ쥳ɤĹꤹ롣ޤ
.I bval
ʸ (pad character) ꤹ롣
ǡ١줿쥳ɤ
.I reclen
ХȤʤΤǤϡĤʬʸưŪ롣
.TP
.B R_NOKEY
.BR dbopen (3)
ǻꤵ줿󥿡եǤϡ󥷥ʥ쥳ɼ
ƤӽФȥǡ¤ΤξƤ
.B R_NOKEY
ե饰ꤵƤȡ¤ΤΤ
.I cursor
롼ɬפȤʤ
ѤСץꥱ󤬥եνݤˡ
Υ쥳ɤɤޤʤƤѤˤʤ롣
.TP
.B R_SNAPSHOT
Υե饰ꤹȡ
.BR dbopen (3)
θƤӽФκݡ
ꥸʥե뤫ѹƤʤ쥳ɤɤˡ
ե snapshot Ѥ롣
.RE
.TP
.I cachesize
ꤵꥭåκ祵 (Хñ)
ͤ
.B ޤ
ͤǤꡢ᥽åɤϤͤۤ
Ƥ뤳Ȥ⤢롣
.I cachesize
 0 (뤤ϻꤵƤʤ) ξ硢ǥեȤΥå夬Ȥ롣
.TP
.I psize
recno ᥽åɤϡȤΥ쥳ɤΥԡ
btree ¸Ƥ롣
ͤϡ btree ΥΡɤФѤ
ڡ (Хñ) Ǥ롣
.I psize
 0 (뤤ϻꤵƤʤ) ξ硢
ե륷ƥ I/O ֥åˤ
ڡ롣
ܺ٤
.BR btree (3)
򻲾ȡ
.TP
.I lorder
ǡ١˳ǼƤ᥿ǡͤΥХȥ
οϡɽΤǤ롣
㤨Хӥåǥʤ顢οͤ 4,321 Ȥʤ롣
.I lorder
 0 (ꤵƤʤ) ξ硢ߤΥۥ
ǻȤƤХȥȤ롣
.TP
.I reclen
쥳ĹĹ
.TP
.I bval
ѥ쥳Ĺˤơ
쥳ɤν򼨤ڤХ (ڤʸ) Ǥ롣
쥳ĹǤʸȤƻȤ롣
ͤꤵƤʤȡ
ѥ쥳ĹΥ쥳ɤνˤϲ ("\en") Ȥ롣
쥳ĹΥ쥳ɤ϶ (space) 롣
.TP
.I bfname
recno ᥽åɤϡ
ȤΥ쥳ɤΥԡ btree ¸Ƥ롣
.I bfname
 NULL Ǥʤ硢 btree ե̾
(btree ե
.BR dbopen (3)
˻ꤹե̾) ꤹ롣
.PP
.I recno
᥽åɤǻȤ륭/ǡФΥǡʬϡ
¾Υ᥽åɤƱǤ롣
ϰۤʤäƤ롣

.I data
եɤ
.I recno_t
Ρ֤ؤΥݥ󥿤ǤʤФʤʤ
.I recno_t

.I <db.h>
󥯥롼ɥեƤ롣
η̾μѲǽʺ̵Ǥ롣

.I size
եɤϤηΥȤʤ롣
.PP
recno ᥽åɤΥե˴ϢŤ
᥿ǡ¸ߤǤʤ顢
ǥե (쥳Ĺ䥻ѥ졼ʸʤ)
Фѹϥե򳫤Ū˻ꤷʤФʤʤ
.PP
.BR dbopen (3)
ǻꤵ줿󥿡եǤϡ
.I put
󥿡եȤäƿ쥳ɤȤˡ
ꤷ쥳ֹ椬ǡ١¸ߤƤ쥳ֹ
İʾ礭ȡ
Υ쥳ɤƱˤǤƤޤ
.SH 顼
.I recno
᥽åɥ롼ϼԤ
.BR dbopen (3)
ǻꤵƤ륨顼˱
.IR errno " "
뤤ϰʲ˼
.I errno
򥻥åȤ롣
.TP
.B EINVAL
Ĺǡ١˥쥳ɤɲäȤǡĹ
.SH Х
ХȥȤƤϥӥåǥȥȥ륨ǥΤߤ
ݡȤƤ롣
.SH Ϣ
.BR btree (3),
.BR dbopen (3),
.BR hash (3),
.BR mpool (3)
.sp
.IR "Document Processing in a Relational Database System" ,
Michael Stonebraker, Heidi Stettner, Joseph Kalash, Antonin Guttman,
Nadene Lynn, Memorandum No. UCB/ERL M82/32, May 1982.