Collections of entities in one file
Parts and wholes, files and directories, text and markup.
|formats||JSON, SQL, TAR, XML, YAML|
|related types||Database, Markup|
Structured data needs a concept of container to hold the structure by which various items of data are kept together.
Think of parts and wholes, files and directories, text and markup.
Often, data containers are just plain text files that adhere to a defined scheme that gives structure to their contents.