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--It is fault-tolerant--crashes of clients or servers during garbage collection will not corrupt the state of the persistent object space.

Garbage Collection for a Client-Server Persistent Object Store

Initially, such movement will be under programmer control, but we will need to devise ways in which the placement of objects can be controlled automatically by the system itself, in much the same way that persistent objects migrate from disk to main memory and back again without direct programmer intervention.

Strategic directions in object-oriented programming

In Proceedings of the 6th International Workshop on Persistent Object Systems (Tarascon, France, Sept.) Springer-Verlag, New York, 331-354.

Type-Checking OQL Queries In the ODMG Type Systems

Here we explore the potential of metasystems and the technical problems that have to be solved to realize them, highlighting five metasystem uses: shared persistent object spaces; transparent remote execution; wide-area queueing systems; wide-area parallel processing; and meta-applications.

Metasystems

The POA supports two types of CORBA objects: the persistent object originally specified by CORBA, and a new shorter-lived object called a transient object.

New features for CORBA 3.0: despite its original flexibility and applicability to various environments, CORBA evolves to remain viable as a standard for distributed object-oriented applications

A persistent object has a life cycle quite independent of that of its servant.

Binding, migration, and scalability in CORBA: One Repository to register them all, One Repository to find them, One Repository to start them all, and with IIOP bind them, in the land of CORBA where the Objects lie. (With apologies to J.R.R. Tolkien)

This standard, called the persistent Object Adapter (POA), provides ORB portability.

Distributed object computing platforms: CORBA offers a useful methodology and middleware for building interoperable databases

Object Request Brokers (ORBs) then mediate the interactive access linking the icons in the graphical patient record to the distributed databases that provide the persistent object storage for the multimedia data.

An international collaboratory based on virtual patient records

A create operation can be used to make an object (given by a reference) into a persistent root, that is, a persistent object with a specified name to be used when retrieving it from the OODB server with a get operation.

Cooperative hypermedia systems: a Dexter-based architecture

These facilities sped debugging and simplified the code of many parts of the operating system, for example, the file system, application interface, name servers, and persistent object code.

Designing and implementing 'choices': an object-oriented system in C++

Persistent Object Stores: Object managers such as Mneme [11] and ObServer [17[ have been built without all the functionality of the DBMSs described here.

Next-generation database systems

Also, when an object o is no longer referenced by any other persistent object or value, the space it occupies in memory and on disk is recovered if the object is not attainable by any temporary variable or any temporary object.

The O2 system