Looking for explanation of OODB problem 
Author Message
 Looking for explanation of OODB problem

It is not entirely clear what is being described below. Rather than
propose my interpretation, I am looking for other opinions and

From "UNIX Today!", May 13, 1991, pp. 58, 64...

    [Paraphrasing: Dan Gerson, Xerox PARC, is developing collaborative
    systems, in particular a document database that will allow
    multiple users and track versions. He's not sure OODBs are best
    for his work. He's using a Sybase DBMS and is investigating
    ObjectStore from Object Design.]

    [Quoting: typing errors are mine.]

    But OODBMSes have their drawbacks as well. "Currently, OODBMSes
    are not very well developed," he [Gerson] says.

    "The basic problem in an OODBMS is in the user I/O inside of a
    transaction," Gerson adds. "Programs in an RDBMS have a looser
    connection to the data. Users issue an SQL query, the data base
    gets a table, makes a copy of it, and the user looks at it on his

    During a transaction in an OODBMS, objects are loaded into memory,
    either real or virtual. "As soon as you execute a transaction, you
    can't see the object anymore," he says. "In an RDBMS, the system
    is giving you some sort of a copy. In an OODBMS, the system is
    giving you the actual object, so they're only valid in a

    Gerson syas he believes few people are aware of this fundamental
    flaw in OODBMS technology because so few systems are out there.
    Those that are function as single-user, workstation-based
    development systems, not multiuser systems where deadlocks can
    occur. Besides, he says, he thinks some OODBMS vendors are either
    unaware of the possible problem or deliberately ignoreing it.

    [End of quote.]

that. You can also try going through uunet!(mntgfx, mentorg, mentor.com)!plogan
[Can you tell things are changing around here?]

Tue, 23 Nov 1993 03:44:40 GMT
 [ 1 post ] 

 Relevant Pages 

1. Looking for definition of OODB (an OODB manifesto)

2. looking for getrows() explanation

3. looking for OODB papers

4. looking for Observer (OODB)

5. Looking for internship in OLAP & OODB

6. Looking for a cross platform OODB, for MACs, OS/2 and UNIX

7. better explanation to my formula problem

8. Fixed problem, but need explanation

9. Possible explanation for readline configuration problems

10. problems with ODBC drivers and BDE alias: I need explanation

11. i need help and explanation on the below problem

12. Problems with VERSANT OODB

Powered by phpBB® Forum Software