PPT Slide
But the Revolution "Failed" ($0B)
- Lingering OO-DBMS differences
- Query power, API details, implementation twists
- Piecewise ODMG standard conformance (ex: OQL!)
- Still behind R-DBMSs in important ways
- Codasyl-like schema compilation cycle
- Schema evolution painful, if supported
- Typically missing many useful "goodies"
- Support for multiple application languages
- Query optimization, views, authorization, constraints, triggers, multi-user scalability and robustness, ...
- Other factors (niche market)
- SQL-based application building tools
- Architecturally biased towards "fat clients"