The subject innovation provides a system and/or a method that facilitates developing schemas for a file storage system. A type definition component can provide a schema grammar, wherein a generator component can employ the schema grammar to build the schema for the file storage system. The schema grammar can describe information types stored in the file storage system that are represented as instances of complex types that are part of a type system that supports inheritance. The schema grammar can support a declaration of an association between types, versioning specifications, and/or content indexing specifications.