XML by Example

• XML is textual, which simplifies testing and debugging (this should

not be neglected because very few applications work flawlessly the

first time).

• XML is cost effective to deploy because many vendors support it; com-

panion standards are also available.

XML for the Data Tiers

XML brings its emphasis on structure, its extensibility, its scalability, and

its versatility to the data tiers. This chapter has discussed the structure

aspect at length already, so let’s review the other features.

Extensibility

Figure 11.6 is the structure for the list of products. Listing 11.2 is an

example of a list of products.

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XML for the Data Tiers

Figure 11.6: Structure ...