Data Model Hierarchy of Mongo Database

Data Model Hierarchy of Mongo Database

Data Model Hierarchy of Mongo Database:

A Mongo system holds a set of databases (for e.g. databases in SQL Server)
A database holds a set of collections
A collection holds a set of documents (tables in SQL Server)
A document is a set of fields (for e.g. attributes in tables)
A field is a key-value pair
A key is a name (string)
A value is a basic type like string, integer, float, timestamp, binary or a document, or an array of values (for e.g. Datatype in SQL Server)