User manual

XSM User's Guide ix
About This Book
This book describes the PowerDesigner XML Model environment. It shows
you how to do the following:
♦ Build an XML model
♦ Work on an XML model
♦ Generate and reverse engineer a DTD file
♦ Generate and reverse engineer an XSD file
♦ Generate and reverse engineer an XDR file
♦ Generate an annotated schema
♦ Generate a DAD file
♦ Generate an SQL/XML query
♦ Generate an XML model from a PDM
♦ Generate an XML model from an OOM
♦ Generate an XML model from another XML model
This book is for anyone who will be designing or building an XML model
with PowerDesigner. It requires an understanding of XML. Some experience
with XML Schema might also be helpful but not required. For more
information, see the Bibliography section at the end of this chapter.
The PowerDesigner modeling environment supports several types of models:
♦ Conceptual Data Model (CDM) to model the overall logical structure
of a data application, independent from any software or data storage
structure considerations
♦ Physical Data Model (PDM) to model the overall physical structure of
a database, taking into account DBMS software or data storage structure
considerations
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