000-142 Latest Exam Braindumps
Question 10: Analyze the following XML and DTD fragments that implement ID, IDREF and IDREFS used to linkmanager and subordinate relationships. Where is the error in the implementation of this logic?
employees.dtd:
<!ATTLIST employee empid ID #REQUIRED>
<!ATTLIST employee mgrid ID #IMPLIED>
<!ATTLIST employee mgr IDREF #IMPLIED>
<!ATTLIST employee subs IDREFS #IMPLIED>
employees.xml:
<employees>
<employee empid="e1" mgrid="m1" subs="e2"><name>Bob Smith</name></employee>
<employee empid="e2" mgrid="m2" mgr="m1" subs="e3 e4"><name>Carol
Jones</name></employee>
<employee empid="e3" mgr="m2"><name>Keith Martin</name></employee>
<employee empid="e4" mgr="m2"><name>Monica Williams</name></employee>
</employees>
A. The subs IDREFS is formatted improperly for the second employee record.
B. The mgrid must be defined as "#REQUIRED" in the DTD.
C. The empid and mgrid attributes conflict as an element may only have a single ID attribute.
D. First two records are invalid as each employee record may have either empid or mgrid attribute, but not
both.
Correct Answer: C
