object-oriented-database

I've been using relational databases + object relational mappers for object persistence. I don't think this is a truly adequate solution for persistence, because it adds unnecessary overhead. It also forces me to fit objects in a table-like structure, which sometimes can't be done gracefully - it's like fitting a square in a circle - it won't work well. Now, I am aware that there are object-oriented databases out there, but for one thing they lack support, and also the relational model works for most of the data - just not all of it. So, are there DBMS that support both object-oriented and

I'm new to PostgreSQL and I'm struggling to understand how to use a reference to an 'instance' (or row) from a table as a value within a row of another table. Here is my desired result: class User{ int age; Post[] posts; } class Post{ int postId; ... } // Sql script sqlMain{ User k = new User(20); k.addPost(10, ...); } As you can see, I want an (dynamic prefereably, like an ArrayList) array of posts as an attribute of a user. So far I have the following Script: CREATE TABLE Post( postId INT ) CREATE TABLE User( id INT, posts Post[] ) // Member function of User class CREATE FUNCTION addPost

A while ago we started developing a new project which internally has about 25-30 different classes/types/models that are heavily related to each other either via 1:n, n:m or n:1 relationships. Back then we went with a native .net oodbms system basically because what it allowed us to do was to take our object model and simply add a few persistence related methods(-calls) here and there and we were ready to go. However, over time we ran into more and more caveats, really bad, non-fixable (within a reasonable timeframe) limitations that forced us to implement slow workarounds resulting in

Just thinking that a relational db with an ORM is in many ways very similar to an object oriented database. My experience lies solely with RDMS with a hint of ORM, so it seems to me that object oriented databases are very similar but without the experience I can't say for sure. If you have used object oriented databases and ORMs can you compare them? What are the weak points associcated with object oriented databases compared to RBMS+ORM? What are the weak points associated with object oriented databases compared to RBMS+ORM? The biggest weakness is the lack of standardization : no standard