open-source network database

#1

Hello all.

I am working on an application that has a lot of structures that have
pointers to other structures, and all this has to be written to disk and
restored. I've realized that it would be a lot easier to embed a simple
database in my application, and not do my own allocation of memory,
determination of indexing, and all the rest. The application is written
mostly in C.

Is there an open-source database I can embed in my application? I could
certainly use PostgresSQL, but I don't need an SQL interface. A circa
1980's network database would suit me fine. It could almost be a
hierarchical database, but some of the nodes exist in more than one tree.

Is there anything like this out there? Btrieve or dBase before the SQL era
began in the mid 80's?

Thanks for any ideas.

Regards,

Rick

#2

Why don't you try object databases?
Object databases should suit you best.

Adam

"Rick Hedin" <rhedin (AT) aquifer (DOT) geology.uiuc.edu> wrote

Quote:

Hello all.

I am working on an application that has a lot of structures that have
pointers to other structures, and all this has to be written to disk and
restored. I've realized that it would be a lot easier to embed a simple
database in my application, and not do my own allocation of memory,
determination of indexing, and all the rest. The application is written
mostly in C.

Is there an open-source database I can embed in my application? I could
certainly use PostgresSQL, but I don't need an SQL interface. A circa
1980's network database would suit me fine. It could almost be a
hierarchical database, but some of the nodes exist in more than one tree.

Is there anything like this out there? Btrieve or dBase before the SQL era
began in the mid 80's?

Thanks for any ideas.

Regards,

Rick

#3

Okay. Please mention the name of an open source object database that can be
embedded into applications, so I can investigate it.

Regards,

Rick

"Adam" <adamotory (AT) hotmail (DOT) com> wrote

Quote:

Why don't you try object databases?
Object databases should suit you best.

Adam

#4

Rick,

If you can find it, and if you're developing on Linux, there's a database
called db.linux that was open sourced by its former owner, Centura Software
(now in C-11). It's genesis was as db-VISTA a circa-80's network model
database, later known as RDM.

Best of luck.

"Rick Hedin" <rhedin (AT) aquifer (DOT) geology.uiuc.edu> wrote

Quote:

Hello all.

I am working on an application that has a lot of structures that have
pointers to other structures, and all this has to be written to disk and
restored. I've realized that it would be a lot easier to embed a simple
database in my application, and not do my own allocation of memory,
determination of indexing, and all the rest. The application is written
mostly in C.

Is there an open-source database I can embed in my application? I could
certainly use PostgresSQL, but I don't need an SQL interface. A circa
1980's network database would suit me fine. It could almost be a
hierarchical database, but some of the nodes exist in more than one tree.

Is there anything like this out there? Btrieve or dBase before the SQL
era
began in the mid 80's?

Thanks for any ideas.

Regards,

Rick

#5

Rick Hedin wrote:

Quote:

Is there an open-source database I can embed in my application? I could
certainly use PostgresSQL, but I don't need an SQL interface. A circa
1980's network database would suit me fine. It could almost be a
hierarchical database, but some of the nodes exist in more than one tree.

I've been very impressed with SQLite (http://www.sqlite.org/). Of course
it does have a SQL interface.

MB

#6

"Information" <info (AT) mcobject (DOT) com> writes:

Quote:

If you can find it, and if you're developing on Linux, there's a database
called db.linux that was open sourced by its former owner, Centura Software
(now in C-11). It's genesis was as db-VISTA a circa-80's network model
database, later known as RDM.

ITTIA <http://www.ittia.com/> now sells db.linux; apparently they
acquired license/copyright from Centura.

[Note to self: Any time anything like this comes available, be sure
and put a copy up on SourceForge so that if it subsequently disappears
from view, there's _something_ still available freely...]
--
If this was helpful, <http://svcs.affero.net/rm.php?r=cbbrowne> rate me
http://cbbrowne.com/info/rdbms.html
"Few people are capable of expressing with equanimity opinions which
differ from the prejudices of their social environment. Most people
are even incapable of forming such opinions." (Albert Einstein)

#7

In article <QBDSa.3154$o7.40381 (AT) vixen (DOT) cso.uiuc.edu>, Rick Hedin
<rhedin (AT) aquifer (DOT) geology.uiuc.edu> writes

Quote:

Hello all.

I am working on an application that has a lot of structures that have
pointers to other structures, and all this has to be written to disk and
restored. I've realized that it would be a lot easier to embed a simple
database in my application, and not do my own allocation of memory,
determination of indexing, and all the rest. The application is written
mostly in C.

Is there an open-source database I can embed in my application? I could
certainly use PostgresSQL, but I don't need an SQL interface. A circa
1980's network database would suit me fine. It could almost be a
hierarchical database, but some of the nodes exist in more than one tree.

Look at the various Multi-Value databases. In particular have a play

with MaVerick (written in Java) and/or my C routines that I wrote for
MaVerick.

Note however that this stuff is pre-alpha to some extent...

Or if it's for personal use, you can get various commercial variants for
free ...

Cheers,
Wol
--
Anthony W. Youngman <pixie (AT) thewolery (DOT) demon.co.uk>
'Yings, yow graley yin! Suz ae rikt dheu,' said the blue man, taking the
thimble. 'What *is* he?' said Magrat. 'They're gnomes,' said Nanny. The man
lowered the thimble. 'Pictsies!' Carpe Jugulum, Terry Pratchett 1998
Visit the MaVerick web-site - <http://www.maverick-dbms.org> Open Source Pick

#8

Thanks for the ideas! db-VISTA / db.linux , MaVerick

I'm contacted the current db-vista people, and am examining MaVerick. It
will get to someplace good, with enough effort.

Regards,

Rick

#9

In article <QBDSa.3154$o7.40381 (AT) vixen (DOT) cso.uiuc.edu>,
"Rick Hedin" <rhedin (AT) aquifer (DOT) geology.uiuc.edu> wrote:

Quote:

Hello all.

I am working on an application that has a lot of structures that have
pointers to other structures, and all this has to be written to disk and
restored.
The free version of OOFILE will let you do that.

http://www.oofile.com.au/oofile_ref/html/
http://www.oofile.com.au/downloads.html

Quote:

The application is written
mostly in C.
could you cope with a very small amount of c++ if it made all the data

access trivially easy and you barely noticed it :-) ?

The OOFILE model of relationships makes it very easy to think
pointerwise, eg: changing the current selection in Patients by a related
field:
Patients.search(Patients->Visits->Why=="Flu");

http://www.oofile.com.au/oofdoc/samples/ooftst16

The good news is that if you get massive and need to store hundreds of
millions or even just tens of thousands of records, OOFILE will let you
use Faircom's c-tree Plus engine (or for smaller systems, our own dBase
engine) with only 1 line of source change.

--
Andy Dent BSc MACS AACM http://www.oofile.com.au/
OOFILE - Database, Reports, Graphs, GUI for c++ on Mac, Unix & Windows
PP2MFC - PowerPlant->MFC portability

#10

Steven C. (nospam (AT) xxx (DOT) com) wrote:
: Andy,

: This sounds very interesting. I'm looking for something simple. My
: database will just be key value pairs.

Berkeley DB provides key value pairing of data.

Berkeley DB is somewhat of a unix standard.

When using perl I use the BerkeleyDB-0.23.tar.gz package, and C programs
are also quite simple to write for basic read/write lookups.