関連ワード:  is sql a non relational database    is sql used in non relational databases    is sql a nosql database    table storage is a non relational no sql database    no sql is a non relational distributed and horizontal scalable database    is sql only for relational database    why use non relational database    what is non relational database    is nosql a relational database    when should i use a nosql database instead of a relational database