Errors in Stonebraker's DBMS Matrix
The primary error in Stonebraker's DBMS Matrix is the apparent assumption that ODBMSs do not have a query capability. That is false as can be seen in the table on the page that introduced this myth.
So, let us revisit the DBMS Matrix. Redrawing it with the facts on ODBMS queries, the DBMS Matrix now looks like the following figure.
This is, however, not very useful for classifying DBMSs. Its basic message is that you can handle complex data with either an Object-Relational DBMS or an Object DBMS.
What about performance on complex data? That can be used to create a better DBMS Matrix. Before creating the better matrix, see the navigating objects page.
More on the general topic: Stonebraker's DBMS Matrix