7. You have a table containing columns with the XML data type. No primary key
has been assigned yet, but indexes have been set up on a few of the other table
columns, including columns defined with the XML data type. You want to
define the primary key. Which of the following best describes what you can do?
A. Use the CREATE PRIMARY XML INDEX( ) syntax to create the
primary key.
B. Drop all indexes on the non-XML columns.
C. Drop all indexes on XML columns.
D. Drop the table and re-create, defining the primary key on the XML
column first.
The correct answer is C. Answer A is not correct because running CREATE
PRIMARY XML INDEX( ) will result in an error due to the existing XML
indexes. Answer B is incorrect because the non-XML columns do not impact
the XML primary key in this situation. Answer D will work in this situation,
but it is not necessary and, in some cases, not practical to drop the table and
re-create. This answer is not the best example of what can be done and is
therefore incorrect.
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