Question

What is the generic handle whose meaning depends on context?

(a) $dbh

(b) $sth

(c) $fh

(d) $h

I had been asked this question in an online interview.

My query is from Spatial Data Types topic in section Data Type Reference, Operators and Functions of MySQL

Answer 1

Right option is (d) $h

To explain I would say: The variable named ‘$fh’ is a handle to an open file. ‘$h’ is a generic handle and the meaning depends on context. ‘$dbh’ is a handle to a database object. ‘$sth’ is a handle to a query object.