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Deductive Object Database System: ROL2 is a significant extension of ROL. It is now a complete deductive object-oriented database system. It supports not only structurally object-oriented features such as object identity, complex object, class hierarchy, multiple inheritance, but also behaviorally object-oriented features such as methods and encapsulation. The methods can not be used for queries but also updates.
Case Pathways Database System allows users to visualize pathways in multiple abstraction levels, and to pose predetermined as well as ad hoc queries using a graphical user interface. |
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