Answer:
The correct answer for the given question is " Number of columns in the result set" .
Explanation:
In java the ResultSetMetaData is an interface which is used to getting metadata .
The ResultSetMetaData getting the metadata of a table like number of column ,total column etc.
Their are following method of ResultSetMetaData interface
int getColumnCount():it return total number of column in ResultSet object.
String getColumnName(int index):returns the column name
For example
ResultSet r;
ResultSetMetaData sm=r.getMetaData();
// where r is ResultSet
sm.getColumnCount()); :It return total column in table
sm.getColumnName(1)): it return the column name .
