Cloud database

Modern relational databases have shown poor performance on data-intensive systems, therefore, the idea of NoSQL has been utilized within database management systems for cloud based systems. Within NoSQL implemented storage, there are no requirements for fixed table schemas, and the use of join operations is avoided. ``The NoSQL databases have proven to provide efficient horizontal scalability, good performance, and ease of assembly into cloud applications.''

Question: is sql also the standard interface in cloud based solutions
Answer: no