I haven't used NoSQL databases, so I don't have an opinion on that comparison. As for more traditional relational DBMSs (MySQL, Postgress, Oracle), there are ma

I haven't used NoSQL databases, so I don't have an opinion on that comparison. As for more traditional relational DBMSs (MySQL, Postgress, Oracle), there are many differences which could be considered either advantages or disadvantages, depending on who you asked. Examples: - level of normalization determined by programmer, not DBA - relationships (joins, etc.) enforced at program level, not schema - no typing (everything is a string) - DBMS performance is mathematically predictable & determined (hashing) - everything is variable length - anything can be multi-valued or multi-subvalued - No schema needed. Just code.