Ontos     programming/object-oriented database/C++
OS/2 Version of Ontos on the Way
 
Microbytes Daily News Service
Copyright (c) 1989, McGraw-Hill, Inc.
Ontologic says it will release an OS/2 version of Ontos, its
object-oriented database, in December. Ontos, available for Sun
and Apollo workstations, also works with C++.
Ontos provides a version of C++, called Persistent C++, that
comes with a class library that defines persistent classes such
as sets, lists, dictionaries, and arrays. Classes that you derive
from these inherit their persistence. A tool called Classify
reads C++ class definitions and generates an object-oriented
database schema; another, called CPlus, runs the C++ compiler and
adds the glue that binds the application to the database. Other
tools include a database browser and editor, a profiler, a
database reorganizer, and administrative utilities.
 
At the OOPSLA conference in New Orleans, Ontologic announced that
it would support Neuron Data's hybrid expert system shell,
Nexpert Object. Ontologic reports that the one-to-one mapping of
in-memory structures to disk outperforms relational databases,
for  applications that use complex OOP data-modelling techniques.
 
Price: $15,000; Persistent C++, $9900; Class Library, $695.
 
Contact: Ontologic, Inc., Three Burlington Woods, Burlington, MA
01803, (617) 272-7110.
 
                              --- Jon Udell
 
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