Question: 1. International Organization for Standardization (ISO). Information Processing Systems, Open Systems Interconnection, Remote Data Access Part 2: SQL Specialization (Draft International Standard). Document ISO DIS 9579-2 (February 1990).
2. David Bell and Jane Crimson. Distributed Database Systems. Reading, Mass.: Addison-Wes-ley (1992). This is the most recent of several textbooks devoted to the topic of the present chapter (two others are mentioned below [21.9,21.24]). A notable feature of this book is the inclusion of an extended case study involving a health care network. It is also a little more pragmatic in tone than the other two.