a. The primary key cannot be null. b. None of these choices is correct. c. Most tables need a foreign key. d. Tables are linked by using foreign keys.

Select all that apply. which of the following are proofreading options included in microsoft word? spell check find replace grammar check formatting check

Are special combinations of keys that tell a computer to perform a command. keypads multi-keys combinations shortcuts

Laire writes a letter to her grandmother, in which she describes an amusement park she visited last week. she adds pictures of that place in her letter. which feature of a word processing program will claire to remove unwanted parts of the pictures?