[dmz73]

It is called Structured Query Language, it allows for complex logic that can be processed close to the data to speed up operations and reduce complexity and increase reliability of client applications. Sure, if you require Google scale of connectivity, it might not work but 99.9999% of people do not and their applications would be simpler, cleaner, more performant and more reliable if they learned and used their database correctly instead of re-implementing all that functionality (but badly) in their application layer.