There has been a lot more new stuff in the world of programming languages, even recently, than there has been in the world of data schemata and encoding rules.
That said, most of the innovation in programming language theory has been around Haskell and related languages, and it has not justified languages like Golang or Python. DSLs in general are justified regardless of whether they are innovative in terms of programming language theory.
That said, most of the innovation in programming language theory has been around Haskell and related languages, and it has not justified languages like Golang or Python. DSLs in general are justified regardless of whether they are innovative in terms of programming language theory.