isdelete(S)                    6 January 1993                    isdelete(S)


 Name

    isdelete - delete record specified by primary key

 Syntax


    cc  . . .  -lisam


    isdelete (isfd, record)
    int isfd;
    char *record;


 Description

    The isdelete function deletes a record from a file using a key value.
    You can use the following arguments with this routine:


    _________________________________________________________________________
    Argument          Description
    _________________________________________________________________________

    isfd              File descriptor identifying a currently open ISAM file.
    record            Search value pertaining to the current key of the
                      record to be deleted.

    If duplicate primary keys are allowed, then isdelete should not be used
    and the isread and isdelcurr functions should be used instead.

    Any index entries associated with the deleted record are also deleted.

    The isrecnum pointer is set to the record just deleted, and the current
    record position is unchanged.

    You must open the file with the ISINOUT option.  Otherwise, the operation
    fails.  On success, isdelete returns 0.  Otherwise, it returns -1 and
    sets iserrno to indicate the error.

 Example


       isdelete(bookfd, buffer) ;


 See also

    isdelcurr(S), isdelrec(S)

 Standards conformance

    isdelete is not part of any currently supported standard; it is an exten-
    sion of AT&T System V provided by the Santa Cruz Operation.