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Listing 2. Sample DTD product file: product.dtd
<!ELEMENT godown (product)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT category (#PCDATA)>
<!ELEMENT description (#PCDATA)>
<!ELEMENT price (#PCDATA)>
<!ELEMENT deliverytime (#PCDATA)>
<!ELEMENT display (#PCDATA)>
<!ELEMENT product (name,category,description,price,deliverytime,display)>
<!ATTLIST product id CDATA #REQUIRED>
<!ATTLIST display object ENTITY #REQUIRED>
<!NOTATION PICTURE SYSTEM "gif/jpeg/tiff/bmp">
<!ENTITY watch1 SYSTEM "http://www.hmti.com/mecwatch/shakthi/gents/sgcs07a3.jpg" NDATA PICTURE>
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