Explain why a cohort in the two-phase commit protocol cannot release locks acquired by the subtransaction until its uncertain period terminates.

What will be an ideal response?


The cohort must block because the coordinator might decide (or might have already decided) commit or abort, and the cohort must make the same decision.

Computer Science & Information Technology

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Which of the following is TRUE about cropping an image?

A) The crop pointer is the key used to delete portions of an image. B) The portion of the image to be removed displays in black. C) The portion of an image that is to be removed displays in gray. D) The portion of an object to be deleted displays as light red stripes.

Computer Science & Information Technology

In Outline view the paragraphs formatted with the Heading Style 1 are designated as Level 1 headings

Indicate whether the statement is true or false

Computer Science & Information Technology

A(n) ________ aggregate function incorporates calculation and a logical decision

Fill in the blank(s) with correct word

Computer Science & Information Technology

To remove multiple elements using the unset() function,  separate each ____ name with commas.

A. variable B. array C. element D. argument

Computer Science & Information Technology