Metadata interfaces and XML: The JOLAP metadata interfaces are a subset of the CWM and include extensions for requirements specific to JOLAP.

元数据接口和 XML：JOLAP 元数据接口是 CWM 的一个子集，包括针对特定于 JOLAP 需求的扩展。

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The metadata that describes the interfaces defines expected inputs and attributes, and can provide validation rules, such as whether fields are required.

描述这些接口的元数据定义预期的输入和属性，并能提供一些验证规则，比如字段是否是必需的。

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This use of interfaces and metadata in the manifest enforces loosely coupled yet tightly cohesive modules.

这些接口和清单中的元数据的使用实现了松散耦合但紧密聚合的模块。

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In short, the Learning Registry has created open application programming interfaces (APIs) that allow publishers and others to quickly publish metadata and paradata about their content.

FORBES: Learning Registry Looks to Give Educators the Resources They Need