Four-Way Fusion Demands Discussion
SQL, XML, Web services and grid computing are worth the effort to combine their strengths.This letter coincides with the 2004 Software Development Conference in Santa Clara, where Ill be taking part in a Monday evening panel discussion on "The Marriage of SQL, XML, Web Services and Grids." Moderated by the estimable Ken North, the session will offer viewpoints from Sun, BEA, Microsoft, IBM and Oracle in addition to whatever I can inject: Ill look forward, for example, to finding out what people have to say about the issues raised during the last such panel that I did with Ken, where transaction integrity and security model complexity were two of the high-profile topics. The four-way "marriage" of the SD04 panels title is an interesting metaphor: Even a marriage of two technologies, such as XML and SQL or Web services and grid computing, is often enough to give birth to a houseful of choices and challenges.
For example, when XML and SQL get together, they may quarrel over treatment of recursive data relationships: At the end of this month, this conflict will be considered at the International Conference on Data Engineering in Boston. One paper scheduled for that conference promises "a generic algorithm to translate path expression queries into SQL in the presence of recursion in the schema and queries," which would be a significant contribution.