The _______________ uniquely identifies each row in a table.
Fill in the blank(s) with the appropriate word(s).
primary key.
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The Select Trusted Locations option of the Trust Center dialog box allows the user to designate a folder on the computer where trusted databases reside
Indicate whether the statement is true or false
In the algorithm for sorting a linked list, given below:
``` 1 i = 0 2 ptr = start 3 while ptr is not equal to NULL 4 A[ i++] = ptr 5 ptr = ptr->next 6 // sort the array with a sorting algorithm (swap addresses instead of elements); 7 // use A[ i ]->info to look at an element 8 for all i from 0 to n – 2 9 A[ i ]->next = A[ i + 1 ] 10 start = A[ 0 ] 11 A[ n – 1 ]->next = NULL ``` consider the time complexity of the sorting algorithm used on lines 6-7. Why don’t lines 1-5 and lines 8-11 contribute any more to this time complexity? A. The time complexity of lines 1-5 is O( 1 ) and the time complexity of lines 8-11 is O( 1 ). B. The time complexity of lines 1-5 is O( lg n ), and the time complexity of lines 8-11 is O( lg n ); these time complexities must be less than that of the sorting algorithm. C. Lines 1-5 and lines 8-11 are just “peripheral” lines, that have nothing to do with time complexity. D. The time complexity of the sorting algorithm must be at least O( n ), if nothing is known about the elements ahead of time; the time complexity of lines 1-5 is O( n ), and the time complexity of lines 8-11 is O( n ).