Log data can be divided into structured data and unstructured data. Structured data refers to data that can be described by numbers or a unified data model, with strict length and format…

Log data can be divided into structured data and unstructured data. Structured data refers to data that can be described by numbers or a unified data model, with strict length and format. Unstructured data refers to data that is not easy to express using a two-dimensional logical table in a database, with an irregular or incomplete data structure and no predefined data model.