Semi-structured data
Semi-structured dataTutorial on semi-structured data by Peter Buneman from Symposium on Principles of Database Systems, 1997 is a form of structured data] that does not conform with the formal structure of data models associated with [[relational databases or other forms of data tables, but nonetheless contains tags or other markers to separate semantic elements and enforce hierarchies of records and fields within the data. Therefore, it is also known as schemaless or self-describing structure.