Scrivi uno schema DTD per il seguente documento:
<recipe source="Marjorie Anderson"> <dish>Southern Corn Bread</dish> <ingredients> <ingredient> <quantity>1 cup</quantity> <component>flour</component> </ingredient> <ingredient> <quantity>4 tablespoons</quantity> <component>Royal Baking Powder</component> </ingredient> <ingredient> <quantity>½ teaspoon</quantity> <component>salt</component> </ingredient> <ingredient> <quantity>1 cup</quantity> <component>corn meal</component> </ingredient> <ingredient> <quantity>1½ cups</quantity> <component>whole milk</component> </ingredient> <ingredient> <quantity>4 tablespoons</quantity> <component>melted butter</component> </ingredient> </ingredients> <directions> <step>Sift flour, baking powder, sugar & salt together.</step> <step>Add 1 cup corn meal.</step> <step> Beat egg in cup and add beaten egg and 1½ cups whole milk to make a batter. Stir well. </step> <step> Add melted shortening and beat until light and thoroughly mixed. </step> <step> Pour into greased shallow pan or greased muffin rings. </step> <step> Bake in hot oven at <temperature>425º F</temperature> for <duration>25 minutes</duration>. </step> <step optional="yes">Cut into squares if cooked in shallow pan.</step> </directions> <story> After my mother-in-law <person>Marjorie Anderson</person> died, Beth and I found this recipe written on the "extra recipes" page in a local cookbook in her cupboard. This was published by The Episcopal Churchwomen, Church of Ascension, <city>Mt. Sterling</city>, <state>Kentucky</state>. </story> </recipe>
Considera il documento XML dell'Esercizio I e scrivi le seguenti interrogazioni in XQuery: