JSON Document Data Overview

Not Only SQL (NoSQL) databases are often called schema-less or semi-structured and are used by applications that need a flexible data schema such as mobile applications that need to store data on multiple OSs and devices. Unlike a relational database, which contains predefined columns for data, NoSQL databases are made of objects called documents that contain both the schema and the data.

Microsoft's preferred NoSQL storage format, JavaScript Object Notation (JSON), is a popular open-standard format used by many NoSQL database products and services.

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