M

The Microsoft code name "M" language is a declarative language for working with data and building domain models. It is used by the "Oslo" Modeling platform. M lets users write down how they want to structure and query their data using a textual syntax that is convenient to both author and reader. M does not mandate how data is stored or accessed, nor does it mandate a specific implementation technology. Rather, M is designed to allow users to write down what they want from their data without having to specify how those requirements are met by a specific technology or platform.

The Oslo Modeling Language, M, is a language for modeling domains using text. A key advantage of modeling in text is ease with which both computers and humans can store and process text. The language feature of M enables information to be represented in a textual form that is tuned for both the problem domain and the target audience. The M language provides simple constructs for describing the shape of a textual language - that shape includes the input syntax as well as the structure and contents of the underlying information. To that end, M acts as both a schema language that can validate that textual input conforms to a given language as well as a transformation language that projects textual input into data structures that are amenable to further processing or storage.