A data schema, especially a data subschema in a relational data system.

关系数据系统中的数据模式，特别是子模式。

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What if you now need a new communication mechanism or change to a data schema?

如果你现在需要一个新的通信机制或者数据模式变化了呢？

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Reviewers need to quickly read and comprehend relevant information - presenting it in the form of a data schema simply slows down the process.

审阅者需要迅速地阅读和理解相关的信息——用数据模式表示该信息完全降低了处理的速度。

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Now, RDBMS and SQL somewhat goes directly against the principles that forced Hadoop to be created in the first place, which is requirement to have a predefined structure (known as a schema) of the data being stored.

FORBES: Combating the Big Data skills shortage

Up-front schema design is a poor fit in a world where data requirements are fluid.

FORBES: What You Need to Know About NoSQL Databases