Case 13-2
Judy has begun to apply the basic information that you have given her about schemas, and she would now like your help in mastering the details of how schemas work.

-In her definition of the recipe element, Judy would like to reference the existing definition of the ingredient element.Which of the following element declarations accomplishes this?

Question

Quizplus · Accepted Answer

The element declaration with the "ref" attribute is used to reference an existing element. Therefore, the best choice is option D, which uses the "ref" attribute to reference the existing "ingredient" element. Option A uses the "id" attribute, which creates a new element rather than referencing an existing one. Option B uses the "idref" attribute, which is not a valid attribute for element declarations. Option C uses both the "name" and "ref" attributes, which could cause confusion and is not necessary for simply referencing an existing element.

Case 13-2 Judy Has Begun to Apply the Basic Information That You