Stonebraker's DBMS Matrix
In my view, one possible reason for believing ODBMSs do not support queries is a natural conclusion that could be drawn from the DBMS Matrix, as developed by well-respected database pioneer Dr. Michael Stonebraker. Dr. Stonebraker promoted this matrix in his books, Object-Relational DBMSs: The Next Great Wave and Object-Relational DBMSs: Tracking the Next Great Wave, the press, and in many conference presentations over the years. It is shown below:
Dr. Stonebraker claims that it is a matrix for classifying DBMS applications. Beautiful in its simplicity, the matrix has become part of the database culture and "knowledge." Unfortunately, it's also inaccurate. The problem is the lower right quadrant, which certainly implies that ODBMSs do not support queries. Click here for more on the errors in the DBMS Matrix.
More detail for the current topic: Stonebraker's DBMS Matrix
More on the general topic: Myth: ODBMSs Do Not Support Queries