capitalization in the "schema" word: there is some confusion as to when to use the capitalized spelling "schema" and when to use the lowercase spelling. the lowercase form is a generic term and may refer to any type of schema, including dtd, xml schema (aka xsd), relax ng, or others, and should always be written using lowercase except when appearing at the start of a sentence. the form "schema" (capitalized) in common use in the xml community always refers to w3c xml schema.