JSON stands for JavaScript Object Notation. Suppose that we want to store user preferences for a web application in the database. Usually, we may choose to create a separate table with id, user_id, key, value fields. This may work well for a small number of users, but in the case of thousands of users, the cost of maintenance is unaffordable compared to the value it adds to the web application.
In MySQL, we can utilize the JSON data type for this requirement. MySQL supports the native JSON data type, which enables efficient storage for JSON documents. MySQL supports automatic validation of JSON documents stored in the JSON column. Trying to store invalid JSON documents produces an error. JSON documents stored in JSON columns are converted to an internal format. The format is binary, and structured to enable the server to look up subojbects or nested values directly...
