DTD-Entities

In this section, you will learn about DTD-Entities with syntax and example.

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DTD-Entities

     

Entities are variables used to define shortcuts to standard text or special characters. Entity references are references to entities Entities can be declared internally or externally.

Internal Entity Declaration

Syntax

<!ENTITY entity-name "entity-value">

DTD Example:

<!ENTITY name "Amit">
<!ENTITY company "RoseIndia">

XML example:

<Profile>&name;&company;</Profile>

Note: An entity has three parts: an ampersand (&), an entity name, and a semicolon (;).

An External Entity Declaration

Syntax

<!ENTITY entity-name SYSTEM "URI/URL">

DTD Example:

<!ENTITY name SYSTEM "http://www.roseindia.net/entities.dtd">
<!ENTITY company SYSTEM "http://www.roseindia.net/entities.dtd">

XML example:

<Profile>&name;&company;</Profile>

     

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DTD-Entities

Posted on: May 25, 2007 If you enjoyed this post then why not add us on Google+? Add us to your Circles

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