What is structured data, semi-structured data and unstructured data

Structured Data

Fixed data structure, such as data stored in relational tables

Semi-structured data

Data structure is not fixed, e.g. HTML, JSON, etc.

Unstructured Data

Unstructured data, such as binary files, pictures, etc.

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Origin www.cnblogs.com/hanxiaomeng/p/12600145.html