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Re: Is anyone using an object database?
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Re: Is anyone using an object database?

Hi there

I can not say I have used any C++ ODBMSs with any success. I have built very large applications (30 million+ transactions pm) internet based using both a Java ODBMS and a Smalltalk ODBMS. I am aware that some companies such as Versant do have C++/C interfaces for their product, and I believe there are one or two others. I think your problem is going to be finding an ODBMS that is supported on Mac OS X. There used to be one that was coupled with CodeWarrior some years ago, but I have not heard of anything else for a while. As an ODBMS advocate I would suggest that ODBMSs often outperform RDBMS systems when the data is "very object based", if you know what I mean. It seems to me that a lot of people do not use ODBMSs more out of prejudice and ignorance than any real experience. If anyone does know about a Mac OS X based ODBMS, I would love to hear about it.

Vince


On Jun 25, 2004, at 17:06, Philip Riggs wrote:

Is anyone using an object database? I have used several relational
databases, but for this particular problem an object database seems a
better fit. Can you recommend one for Cocoa applications? Can you
relate your experiences setting up and using them?

I want something to store and access large numbers of objects (some
datasets might be > 2,000,000) based on Guibas and Stolfi's Quad-Edge
data structure. Here are my current structures:

@interface PRPoint : NSObject {
int pointId;
double x, y, z;
}

@interface PRQuadEdge : NSObject {
int edgeId;
PRQuadEdge *oNext, *oPrevious, *dNext, *dPrevious;
PRPoint *origin, *destination;
int leftFace, rightFace;
}

Thanks for any info.
Philip
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References: 
 >Is anyone using an object database? (From: Philip Riggs <email@hidden>)



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