A computer-implemented system and method for creating, managing, and reusing schema type definitions in SOA services, grouped in the form of libraries are disclosed. The method in an example embodiment includes: grouping a plurality of Extensible Mark-up Language (XML) schema (XSD) types, each XSD type defined in an individual XSD file; using a processor to bundle the plurality of individual XSD types into a type library, the type library including a type information file to register the individual XSD types in the type library, the type library further including a type dependencies file to register dependencies between the individual XSD types in the same or different type library; importing types from a different type library, when defining derived types or aggregated types; generating Java artifacts from the XSD types; and associating the Java artifacts with corresponding XSD types in the type information file of the type library.