db4o
DB4O performance retrieving a large number of objects
I\'m interesting in using DB4O to store the training data for a learning algorithm.This will consist of (potentially) hundreds of millions of objects.Each object is on average 2k in size based on my b[详细]
2023-04-08 19:41 分类：问答db4o : ActivationDepth seems to have no effect (?)
Can someone please explain to me why setting the Activation Depth seems to have no effect in the code-sample below ?[详细]
2023-04-06 20:56 分类：问答Restrict child duplicates on creating object in db4o
It\'s a very common situation, but I\'m kinda new using ORM especially in Android, so your help would be awesome.[详细]
2023-04-05 01:33 分类：问答Db4o and object identity
I\'m learning db4o data base, I\'m planing to use it 3-tier project. I don\'t fully understand the concept of object identity in db4o.[详细]
2023-04-01 08:28 分类：问答slow db4o querys on Android
Currently I am trying to integrate db4o into my App. I have a Model which contains - lets say 15 primitives - wrapped in other Objects. storing them is easy and fast, but to recieve them is pain. I tr[详细]
2023-03-31 14:41 分类：问答Using DB4O in MVVM application with Prism
I would like to use db4o for persisting my business object in Prism aplication. How should I maintain IObjectContainer lifetime? As I know from documentation, when I load object with one container I s[详细]
2023-03-30 11:16 分类：问答db4o on Honeycomb Db4oException: File format incompatible
I\'m using db4o in a small project that works great on Android 2.2, 2.3, etc. On Honeycomb, however, database initialization results in the following error:[详细]
2023-03-28 18:51 分类：问答db4o: Same class, different java projects
I have two different Java Applications A and B. They should use the same Database for user management (If the User has an account in Application A, he also has an account in Application B and vice ver[详细]
2023-03-28 03:52 分类：问答increasing object numbers in db4o
I would like to ask you about a problem that I have. I use ASP.NET as an interface and db4o as database. I have this class structure:[详细]
2023-03-23 00:32 分类：问答db4o Tranparent Persistence doesn't store later objects in my own ActivatableCollection<T>
I\'m rolling my own ActivatableCollection<T> for db4o but cribbing heavily from the builtin ActivatableList<T> implementation. I\'m running into the problem where transparent persistence d[详细]
2023-03-22 06:31 分类：问答
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