Support Forums: Message List - db4o 5.0 with Native Queries, a new way of expressing queries http://www.theserverside.com Most recent forum messages en Jive Forums Silver 5.5.30 (www.jivesoftware.com) Fri, 24 May 2013 05:31:55 -0400 OODB design is for short and long term http://www.theserverside.com/discussions/thread.tss?thread_id=37595
Let's take the example of employees working in different departments of a company. You have to...]]> Tue, 06 Dec 2005 21:14:19 -0500 Tue, 06 Dec 2005 21:14:19 -0500 Tue, 06 Dec 2005 21:14:19 -0500 Dec 6, 2005 Ahmed ALEM 0 Use native Java as the OO database API http://www.theserverside.com/discussions/thread.tss?thread_id=37595 There is an open source project called Ozone, wich seems dead, and it's API a bit intrusive.
Ozone is not dead in any way. We have a large user community and several active developers. Ozone is used and has been used in...]]> Thu, 24 Nov 2005 17:43:12 -0500 Thu, 24 Nov 2005 17:43:12 -0500 Thu, 24 Nov 2005 17:43:12 -0500 Nov 24, 2005 Per Nyfelt 1 Use native Java as the OO database API http://www.theserverside.com/discussions/thread.tss?thread_id=37595
Manoj]]> Tue, 22 Nov 2005 23:42:32 -0500 Tue, 22 Nov 2005 23:42:32 -0500 Tue, 22 Nov 2005 23:42:32 -0500 Nov 22, 2005 Manoj Kumar 0 Use native Java as the OO database API http://www.theserverside.com/discussions/thread.tss?thread_id=37595 Revolutions always start with humility, not arrogance.Well, at least all the good ones. :)]]> Tue, 22 Nov 2005 07:53:24 -0500 Tue, 22 Nov 2005 07:53:24 -0500 Tue, 22 Nov 2005 07:53:24 -0500 Nov 22, 2005 Mark N 1 object purist? http://www.theserverside.com/discussions/thread.tss?thread_id=37595
Believe it or not, its a great relief for object purists out there...
Well, not to me. And I'm an object purist.
By which or whose definition I wonder...]]> Tue, 22 Nov 2005 07:12:19 -0500 Tue, 22 Nov 2005 07:12:19 -0500 Tue, 22 Nov 2005 07:12:19 -0500 Nov 22, 2005 Rodrigo B. de Oliveira 0 Use native Java as the OO database API http://www.theserverside.com/discussions/thread.tss?thread_id=37595 Sun, 20 Nov 2005 11:24:36 -0500 Sun, 20 Nov 2005 11:24:36 -0500 Sun, 20 Nov 2005 11:24:36 -0500 Nov 20, 2005 Nitin Dhall 0 What happens when change Object MetaData http://www.theserverside.com/discussions/thread.tss?thread_id=37595 Thu, 17 Nov 2005 13:57:56 -0500 Thu, 17 Nov 2005 13:57:56 -0500 Thu, 17 Nov 2005 13:57:56 -0500 Nov 17, 2005 Juozas Baliuka 0 What happens when change Object MetaData http://www.theserverside.com/discussions/thread.tss?thread_id=37595
Versant doesn't really come to competition with Objectivity database very often, which is what this paper is about, the company Objectivity's OODB and thier particular OODB architecture, as I said...]]> Thu, 17 Nov 2005 12:47:14 -0500 Thu, 17 Nov 2005 12:47:14 -0500 Thu, 17 Nov 2005 12:47:14 -0500 Nov 17, 2005 Robert Greene 1 What happens when change Object MetaData http://www.theserverside.com/discussions/thread.tss?thread_id=37595 http://research.microsoft.com/~gray/papers/SDSSArchive_OO_to_SQL.doc
If somebody wants to evaluate OODBMS then this document must be usefull too.]]> Thu, 17 Nov 2005 03:28:38 -0500 Thu, 17 Nov 2005 03:28:38 -0500 Thu, 17 Nov 2005 03:28:38 -0500 Nov 17, 2005 Juozas Baliuka 2 It seems so... http://www.theserverside.com/discussions/thread.tss?thread_id=37595 Thu, 17 Nov 2005 02:01:20 -0500 Thu, 17 Nov 2005 02:01:20 -0500 Thu, 17 Nov 2005 02:01:20 -0500 Nov 17, 2005 Juozas Baliuka 0 What happens when change Object MetaData http://www.theserverside.com/discussions/thread.tss?thread_id=37595
ftp.versant.com/pub/outgoing/howto/HowToEvaluate_Evaluate.pdf

Cheers,

Robert...]]> Wed, 16 Nov 2005 17:24:27 -0500 Wed, 16 Nov 2005 17:24:27 -0500 Wed, 16 Nov 2005 17:24:27 -0500 Nov 16, 2005 Robert Greene 3 Use native Java as the OO database API http://www.theserverside.com/discussions/thread.tss?thread_id=37595 If db4o data is portable then you need programming language neutral DDL with mapping to PL datatypes and structs. You need PL neutral query languge for this reason too. So I do not think data stored in db4o is...]]> Wed, 16 Nov 2005 17:03:22 -0500 Wed, 16 Nov 2005 17:03:22 -0500 Wed, 16 Nov 2005 17:03:22 -0500 Nov 16, 2005 takenori sato 0 A Better Query Syntax http://www.theserverside.com/discussions/thread.tss?thread_id=37595 Employees emps = new Employees();
emps.Where.LastName.Value = "%A%";
emps.Where.LastName.Operator = WhereParameter.Operand.Like;
emps.Query.Load();
And a more complicated one ...
Employees...]]> Wed, 16 Nov 2005 15:08:31 -0500 Wed, 16 Nov 2005 15:08:31 -0500 Wed, 16 Nov 2005 15:08:31 -0500 Nov 16, 2005 Mike Griffin 0 In fact they are... http://www.theserverside.com/discussions/thread.tss?thread_id=37595 Take operations on huge object trees for an example. An object database is simply the better matching model for this kind data.

If I need to work with huge trees, maybe I should consider something rather specific for huge...]]> Wed, 16 Nov 2005 14:26:07 -0500 Wed, 16 Nov 2005 14:26:07 -0500 Wed, 16 Nov 2005 14:26:07 -0500 Nov 16, 2005 Timur Evdokimov 0 Standard http://www.theserverside.com/discussions/thread.tss?thread_id=37595 db4o is built for devices, for embedded use, for packaged software and for realtime industry applications.It looks like there are no joins, aggregation functions, projection, .... . It see no problems to use plain B+tree for...]]> Wed, 16 Nov 2005 13:08:58 -0500 Wed, 16 Nov 2005 13:08:58 -0500 Wed, 16 Nov 2005 13:08:58 -0500 Nov 16, 2005 Juozas Baliuka 0