XML Unleashed

Chapter 4. Digging Deeper into DTDs

In This Chapter

• Entities and Document Structure

• Characters and Entities

• Working with Entities

• External Entities

• Declaring Notations

• Referencing Entities in Documents

• Using Conditional Sections

Although the logical structure of a document is certainly important, it is the physical structure that's actually responsible for storing document content. This chapter digs deeper into DTDs by examining the role they play in establishing the physical structure of documents. More specifically, you'll learn how entities are used as storage containers for document data. The relationship between characters and entities is also revealed.

One DTD construct closely related to the entity is the notation, which is used to establish ...