Formula

One of the advantages of Salesforce platform is its declarative features, in that i will give a thumbs up for formulas which helps me in most of the use cases. Formula field takes a little bit of calculation out side of the programming and make our tasks easily achievable.

But when someone starts learning the formula functions there is always a little confusion between ISBLANK() and ISNULL() formula methods.

The following questions may occur in ones mind