The Object-Protocol Model (OPM) and Tools

Version 4

New Features in Object-Protocol Model 4

• Abbreviated composition path expressions.
• Count in derived attribute definitions applied on other composition derived attributes.
• ORDER BY statements for set-valued attributes.
• EXAMPLE specifications can be associated with classes and attributes.
• Support for modeling permissions in terms of object ownership and status.
• Query language extended with support for variables and multi-class selections.

OPM Data Management Tools 4

OPM Schema Editor (new version in perl/Tk)

OPM Schema Translator

Documentation: Technical Report LBNL-35582, Chen, I.A., and Markowitz, V.M., 1996.

(See also Mapping OPM Schemas into Relational Database Schemas and Procedures

Chen, I.A., and Markowitz, V.M., Technical Report LBNL-33048, 1996.

OPM Query Language and Translator

Documentation: Technical Report LBNL-38180, Chen, I.A., Markowitz, V.M., Szeto, E., 1996.

Utilities for Publishing OPM Schemas as:

• Latex documents
• Html files
• Postscript diagrams

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Distribution

OPM 4 tools are available at no cost to qualified users.
Requests should be sent to VMMarkowitz@lbl.gov

Please include name, position, affiliation, address, phone and fax numbers, and a brief explanation of the purpose your request.

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Victor M. Markowitz (VMMarkowitz@lbl.gov)

Data Management Research & Development Group Information and Computing Sciences Division Lawrence Berkeley National Laboratory, Berkeley, CA 94720

This work is supported by the Office of Health and Environmental Research Program of the Office of Energy Research, U.S. Department of Energy under Contract DE-AC03-76SF00098.