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Has this project ever been finished?
I am just about to start a related project for my MA thesis and I'd love to see working spatial index in db4o.
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Hello,
Beign a novice with DB4O,this question might be a little silly to answer.Actually I am doing a research project on object oriented databases and i want some infor mation regarding how the objects ,once persisted are stored on to the hard disk along with the indexing mechanisms used there.I went through the documents provided and I can ...
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Hey everyone-
Read the following post from a thread on Slashdot about Brian Aker's thoughts on relational & OO databases (see http://interviews.slashdot.org/article.pl?sid=07/11/28/0019253&from=rss ): Today if you look around in the open source world you will find
examples where developers are wrapping OO layers on top of the
relational ...
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To address Anat's questions:
I would like our efforts to address all of the key areas Anat cites: activation (e.g. bringing an object from persistent storage into main memory), indexing, unique constraints, synchronization, and replication. I believe we will be on the right path if we can define the semantics of these things in abstract terms, ...
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Is it right that I can create index of the required fields of a class to improve the query performance?
For example,
Class Test {
String Id;
String name;
...
}
Db4o.configure().objectClass(Test.class).objectField(''Id'').indexed(true);
Db4o.configure().objectClass(Test.class).objectField(''name'').indexed(true);
Will ...
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I'm playing around with db4o to see if I can use if for future projects. I have created a simple application with one entity to store. The entity has a string data member that I require to be unique. I will always retrieve objects based on this data member thus I removed the class index and and defined a new one for the data ...
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Please go through http://developer.db4o.com/Resources/view.aspx/Reference/Db4o_Database_Management/Indexing
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Hi!
I've found a document that explains indexing in the context of an ODBMS:
http://www.cs.rmit.edu.au/~zahirt/Teaching/oodb/Projects/indexing.ps
It's a nice intro!
Best regards,
German
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