User john updates some rows and asks user damir to log in and check the changes before he commits them. which of the following statements is true?
a. damir can see the changes but cannot alter them because john will have locked the rows.
b. damir will not be able to see the changes.
c. john must commit the changes, so that damir can see them and if necessary roll them back.
d. none of the above

you can not change you age soon as you signed up. the only way is too delete your account and use another account to sign up and put your correct age.

the answer is you.

the answer is b. executive summary. a management summary, or executive summary, is a short article or section of a document, produced for business purposes, that condenses a longer report or proposal or a group of related reports in such a way that readers can rapidly become familiar with a large body of material without having to read it all.