ocr: RS/6000 BNN SAAN 30u Genomap DRS/6000 Parometers dato Qpery-done event Client C - - - Query-requesi spawn - - -m ingres Tuxedo dient dotmese request Tuxedo server Dala Data Ingres Replicator Star Date Data ICL DRS/6000 DTS Gateway Tuxedo Server CA-IDMS/X Cabal Progress lagros dotuhass PS/2 CA-IDMSKY Progsent datasese dotobose Figure 2. Queries are passed transparently and seamlessly across multiple pack- ages, platforms, databases, and networks in a multithreaded architecture.