GATE IT 2005 | Question: 80

Question

Given below is an excerpt of an xml specification.
 

<!DOCTYPE library SYSTEM "library.dtd">
<Book>
<title> GATE 2005 </title>
<type value = "BROCHURE"/>
<accno>10237623786</accno>
</Book>
<Book>
<type value = "FICTION"/>
<accno>0024154807</accno>
</Book>

Given below are several possible excerpts from "library.dtd". For which excerpt would the above specification be valid?

• A. <!ELEMENT Book (title+, type, accno)>
  <!ELEMENT title (#PCDATA)>
  <!ELEMENT type EMPTY>
  <!ATTLIST type value (BROCHURE/FICTION/TECHNICAL)>
  <!ELEMENT accno (#PCDATA)>
• B. <!ELEMENT Book (title?, type, accno)>
  <!ELEMENT title (#PCDATA)>
  <!ELEMENT type ATTLIST>
  <!ATTLIST type value (BROCHURE/FICTION/TECHNICAL)>
  <!ATTLIST accno value (#PCDATA)>
• C. <!ELEMENT Book (title*, type, accno)>
  <!ELEMENT title (#PCDATA)>
  <!ELEMENT type ATTLIST>
  <!ATTLIST type value (BROCHURE/FICTION/TECHNICAL)>
  <!ELEMENT accno (#PCDATA)>
• D. <!ELEMENT Book (title?, type, accno)>
  <!ELEMENT title (#PCDATA)>
  <!ELEMENT type EMPTY>
  <!ATTLIST type value (BROCHURE/FICTION/TECHNICAL)>
  <!ELEMENT accno (#PCDATA)>

Answer 1

Ans is D.

"title" element can be zero or one.

"type" element has no body, only attributes.

Answer 2

Answer: D

title element can be zero or one. (* or ? is used for zero or more number of occurences)

type element has no body, only attributes

Answer 3

ans is option 2