What Does Unstructured Data Mean?

Unstructured data is digital information that cannot be stored efficiently in a relational database (RDMS) because it does not use pre-set data models or schemas.

Techopedia Explains Unstructured Data

Unstructured data refers to data that follows a form that is less ordered than items like spreadsheet pages, database tables or other linear or ordered data sets. In fact, the term “data set” is helpful because it is associated with data that is in neat, accessible arrays, without any extra content, and that is linked or tagged in a specific structure.