db4o experiences?

We run DB40 .NET version in a large client/server project. Our experiences is that you can potentially get much better performance than typical relational databases. However, you really have to tweak your objects to get this kind of performance. For example, if you’ve got a list containing a lot of objects, DB4O activation of these … Read more

What is the difference between graph-based databases and object-oriented databases?

I’d answer this differently: object and graph databases operate on two different levels of abstraction. An object database’s main data elements are objects, the way we know them from an object-oriented programming language. A graph database’s main data elements are nodes and edges. An object database does not have the notion of a (bidirectional) edge … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)