H-PCTE-a high performance object management system for system development environments

H-PCTE is an object management system (OMS) for distributed, open, and integrated system development environments. H-PCTE performs up to several thousand simple operations per second. H-PCTE is intended to be a basis for environments in which tools operate directly on fine-grained data stored in the object base. Fine-grained data modeling has several important implications for the architecture of environments, for tool design, and for the necessary functionality of the OMS. H-PCTE's performance is due to main-memory-oriented implementation techniques and to a careful adaptation of the OMS services to the data management needs of tools. As a result, tools need not pay for OMS services which they do not really need. This applies in particular to recovery and the external view facilities.<>