Relaxer can generate a RELAX NG schema from the Relaxer meta model instance. Since the Relaxer meta model instance can be build from a RELAX NG schema, a RELAX Core schema, sample XML documents, or a RDBMS table schema, Relaxer can translate these input schema instance to the RELAX NG schema. Of course, generating a RELAX NG schema from a RELAX NG schema is not useful. Therefore candidates of input are a RELAX Core schema, sample XML documents, or a RDBMS table schema.