An interesting indicator from the "mentions" graph: how compatible or co-used two technologies are in practice.
For example: C++ programmers apparently don't mention SQL at all, while it's very popular with PHP (which doesn't have a built-in ORM). There is also no overlap between C++ and JavaScript programmers.
Rust is obviously very influenced by C++ and Haskell, but the C++ community doesn't even know about its existence. Somewhat naturally, the Matlab and PHP communities really don't have much in common.
> Maybe LINQ to SQL could have been considered a built-in ORM?
It might be more accurate to say LINQ is built into the languages, but LINQ to SQL is a .NET platform feature, not a language feature. (Of course, the languages are so tied to the Microsoft distribution and the .NET platform that distinctions between language features, language standard library features, and platform features are, for .NET languages, somewhat academic in practice [inasmuch as there is a practical difference that is likely to matter, "does it work on Mono" is probably more important than strict language/library/platform distinctions].)
For example: C++ programmers apparently don't mention SQL at all, while it's very popular with PHP (which doesn't have a built-in ORM). There is also no overlap between C++ and JavaScript programmers.
Rust is obviously very influenced by C++ and Haskell, but the C++ community doesn't even know about its existence. Somewhat naturally, the Matlab and PHP communities really don't have much in common.