但是，很多情况下，开发者不仅仅厌烦了各种类型验证，而且还认为他们的DB只是一个“愚蠢的”数据存储设备，而DM能够减轻开发者的痛苦。
What happens in a lot of cases is developers just end up not bothering with all that and specify the validations only, treating their DB as a "dumb" data store, while DM makes that fairly painless.
同时还支持各种高级功能，如跨多个XML查询的联合，使用xml类型的视图和模式验证。
Advanced features, such as joins across several XML queries, views with XML types, and schema validation are supported.
“开发安全的程序”一文介绍了术语和其他基础，“验证输入”一文论述了对各种数据类型的验证。
"Developing secure programs" covers terminology and other basics, and "Validating input discusses checking various data types."
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