ndbm.h

<ndbm.h>(P)							  <ndbm.h>(P)



NAME
       ndbm.h - definitions for ndbm database operations

SYNOPSIS
       #include <ndbm.h>

DESCRIPTION
       The  <ndbm.h>  header  shall define the datum type as a structure that
       includes at least the following members:


	      void   *dptr  A pointer to the application’s data.
	      size_t  dsize The size of the object pointed to by dptr.

       The size_t type shall be defined as described in <stddef.h> .

       The <ndbm.h> header shall define the DBM type.

       The following constants shall be defined as possible  values  for  the
       store_mode argument to dbm_store():

       DBM_INSERT
	      Insertion of new entries only.

       DBM_REPLACE
	      Allow replacing existing entries.


       The  following  shall be declared as functions and may also be defined
       as macros. Function prototypes shall be provided.


	      int     dbm_clearerr(DBM *);
	      void    dbm_close(DBM *);
	      int     dbm_delete(DBM *, datum);
	      int     dbm_error(DBM *);
	      datum   dbm_fetch(DBM *, datum);
	      datum   dbm_firstkey(DBM *);
	      datum   dbm_nextkey(DBM *);
	      DBM    *dbm_open(const char *, int, mode_t);
	      int     dbm_store(DBM *, datum, datum, int);

       The mode_t type shall be	 defined  through  typedef  as	described  in
       <sys/types.h> .

       The following sections are informative.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       <stddef.h>   ,	<sys/types.h>  ,  the  System  Interfaces  volume  of
       IEEE Std 1003.1-2001, dbm_clearerr()

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic	 form
       from   IEEE   Std  1003.1,  2003	 Edition,  Standard  for  Information
       Technology -- Portable Operating System Interface  (POSIX),  The	 Open
       Group  Base  Specifications  Issue  6,  Copyright (C) 2001-2003 by the
       Institute of Electrical and Electronics Engineers, Inc  and  The	 Open
       Group.  In  the	event of any discrepancy between this version and the
       original IEEE and The Open Group Standard, the original IEEE  and  The
       Open Group Standard is the referee document. The original Standard can
       be obtained online at http://www.opengroup.org/unix/online.html .



POSIX				     2003			  <ndbm.h>(P)