The _______ attribute in an input element inserts a button that, when clicked, will clear the contents of the form.

__________ allows the three necessary conditions but makes judicious choices to assure that the deadlock point is never reached.

Fill in the blank(s) with the appropriate word(s).

In ____________________ organization, the order of the records is physically based on the content of the key field.

Fill in the blank(s) with the appropriate word(s).