Chapter Notes

This chapter covered a lot of territory, and is technically the most challenging chapter in this book. Further discussion can be found in the following research papers, upon which much of the material in this chapter is based. These papers also contain detailed references to related work.

For conceptual joins, see Halpin (2002a, 2005c). For deontic rules, see Halpin (2006a, 2007a). For temporal issues in data modeling see Halpin’s series of online articles on this topic in Business Rules Journal (www.brcommunity.com/index.php). For collection types, see Halpin (2000b). For nominalization and objectification, see Halpin (2005a, 2008). For higher-order types, see Halpin (2004a, 2005d).

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