V. data description data (V)

  Specifically used to describe the data, which is metadata.

  json  xml

  Examples of service metadata to bring:

  • ORM framework implemented, the code can be generated automatically layer model, certainly requires metadata support
  • reflection. Reflecting the ability of each language was weak, the fundamental reason is that the strength of your pre-compiled metadata enough to use.

  In the field of automatic code generation, the metadata will be obtained with more in-depth.

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Origin www.cnblogs.com/juanzhi/p/12366992.html