XML by Example

<!ELEMENT lname (#PCDATA)>

<!-- definition of the address structure

if several addresses, the preferred

attribute signals the “default” one -->

<!ELEMENT address (street,region?,postal-code,locality,country)>

<!ATTLIST address preferred (true | false) “false”>

<!ELEMENT street (#PCDATA)>

<!ELEMENT region (#PCDATA)>

<!ELEMENT postal-code (#PCDATA)>

<!ELEMENT locality (#PCDATA)>

<!ELEMENT country (#PCDATA)>

<!-- phone, fax and email, same preferred

attribute as address -->

<!ELEMENT tel (#PCDATA)>

<!ATTLIST tel preferred (true | false) “false”>

<!ELEMENT fax (#PCDATA)>

<!ATTLIST fax preferred (true | false) “false”>

<!ELEMENT email EMPTY>

<!ATTLIST email href ...