Outubro 2008
Prof. Ismael H. F. Santos
- ismael@tecgraf.puc-rio.br
2
SGML
nDTD
n<!ELEMENT antologia (poema+)>
n<!ELEMENT poema
(titulo?,estrofe+)>
n<!ELEMENT titulo (#PCDATA)>
n<!ELEMENT estrofe (linha+)>
n<!ELEMENT linha (#PCDATA)>
nExemplo de DTD de um livro:
n<!ELEMENT book (author, heading,
chapter+)>
n<!ELEMENT chapter (heading,
(paragraph|figure)*, section*)>
n<!ELEMENT section (heading,
(paragraph|figure)*)>
n<!ELEMENT (author|heading)
(#PCDATA)>
n<!ELEMENT paragraph
((#PCDATA|reference)*)>
n<!ELEMENT reference EMPTY>
