columnKnot		::= mnemonicKnot, underscore, descriptiveColumn
columnTie		::= mnemonicTie, underscore, descriptiveColumn
columnAttribute		::= mnemonicAttribute, underscore, descriptiveColumn
columnAnchor		::= mnemonicAnchor, underscore, decriptiveColumn

tableKnot		::= mnemonicKnot, underscore, descriptiveKnot
tableTie		::= mnemonicTie, underscore, descriptiveTie
tableAttribute		::= mnemonicAttribute, underscore, descriptiveAttribute
tableAnchor		::= mnemonicAnchor, underscore, descriptiveAnchor

mnemonicKnot		::= (upper){3}
mnemonicTie		::= (mnemonicAnchor){2}, (mnemonicAnchor)*
mnemonicAttribute 	::= mnemonicAnchor, (upper){3}
mnemonicAnchor		::= (upper){2}

descriptiveColumn	::= (name)+
descriptiveKnot		::= (name)+
descriptiveTie		::= descriptiveAnchor, (underscore, descriptiveAnchor)+
descriptiveAttribute	::= descriptiveAnchor, (name)+
descriptiveAnchor	::= (name)+

name			::= upper, (lower)*
upper			::= [A-Z]
lower			::= [a-z0-9]
underscore		::= '_'