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Question on JoinRowSet. Please explain.

 
Greenhorn
Posts: 20
Oracle Tomcat Server
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Consider the following code:

Further, given that the following are the contents of STUDENT, ENROLLMENT, TEACHER tables, what will jrs contain?

STUDENT
SIDNAME
1amy
2bob
3Cathy


ENROLLMENT
SIDSUBJECT
1maths
2science

TEACHER
TIDNAMESUBJECT
11Mr. PeterMaths
12Mr. ChanScience


Answer: jrs will be empty.

 
Ranch Hand
Posts: 472
10
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When you add first rowset sid become key on which other will join.(Question from enthuware and answer recommend read api) I wrote how I understand it
 
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