Question

Which method is used to verifythe version number?

(a) changeVersion()

(b) readTransaction()

(c) transaction()

(d) executeSql()

The question was asked by my college director while I was bunking the class.

My doubt stems from Web Databases in chapter HTML Images & Web Page Files of HTML

Answer 1

Right option is (a) changeVersion()

Best explanation: changeVersion() method automatically verify version number and it also changes it like doing a schema update. When this method is invoked it immediately returns and then run transaction steps asynchronously by taking transaction callback as the third argument, error callback as the fourth argument and success callback as the fifth argument.