I have a new version of  SDB  available  for  the  PDT.   It
hasn't  been  tested  much,  but you're welcome to try it if
you'd like.  It is in:

    NOVA::DB1:[BETZ.SDB.KIT]

Please let me know if you decide to use it since I'd like to
keep track of users so that I can notify them of updates.

Here is a list of the commands in the current version.   The
sort  command  works, but it is very slow for large relation
files.  Also, it sorts in place so don't type  control-c  in
the  middle  of  a sort.  (actually, typing control-c in the
middle of any SDB operation is dangerous)


create <rname> ( <adefs> ) <size>       - create a new relation
insert <rname>                          - insert tuples into a relation
delete <rse> ;                          - delete tuples from relations
update <anames> from <rse> ;            - update tuples within a relation
print [<f>] <anames> from <rse> [<i>] ; - print tuples
sort <rname> by <snames> ;              - sort a relation file
import <fname> into <rname>             - import tuples from a file
export <rname> [<i>] ;                  - export tuples to a file
extract <rname> [<i>] ;                 - extract definition to a file
compress <rname>                        - compress a relation file
define <mname>                          - define a macro
exit                                    - exit SDB

<f>             ::=     using <fname>
<i>             ::=     into <fname>
<adefs>         ::=     <a list of attribute definitions>
<rse>           ::=     <rnames> [where <boolean-expression>]
<rname>         ::=     <a relation name>
<rnames>        ::=     <a comma separated list of <rname>s>
<aname>         ::=     [<rname> .] <an attribute name>
<anames>        ::=     * | <a comma separated list of <aname>s>
<sname>         ::=     <aname> { ascending | descending }
<snames>        ::=     <a comma separated list of <sname>s>


Further documentation is available from:

    NOVA::DB1:[BETZ.SDB.KIT]SDB.MEM

There is a version of SDB for VMS in:

    NOVA::DB1:[BETZ.SDB]

This version is totally  compatible  with  the  PDT  version
mentioned above.

Report any problems or suggestions to:

    NOVA::BETZ