Ruby on Rails works with which of the following types of database management systems?

A. SQLite
B. MySQL
C. Oracle
D. All of the above

Answer: D

Computer Science & Information Technology

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The ________ operator is particularly useful when working with complex template types for which it’s often difficult to provide, or even determine, the proper type declaration. Rather than trying to write a complex type declaration, for example, that represents the return type of a function, you can place in the parentheses of this operator an expression that returns the complex type and let the compiler “figure it out.”

a. infer_type b. decltype c. determine_type d. static_assert

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Computer Science & Information Technology

If the search needs to continue in the execution of the current search function, then line(s) __________ is(are) executed.

``` 1 bool search( Node ptr, Bird & bird, Bird dove ) 2 { 3 if ( ptr == NULL ) 4 return false; 5 if ( ptr->info == dove ) { 6 bird = ptr->info; 7 return true; 8 } 9 return search( ptr->next, bird, dove ); 10 } ``` which is called for a linked list (where start points to the first node) using the lines of code: ``` if ( search( start, bird, dove ) ) cout << “search successful” << endl; ``` A. 1 B. 9 C. 4 D. 6-7

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Computer Science & Information Technology

?Within a hard drive's Properties dialog box, the ____ sheet can be used to see how much space is being used by various user accounts.

A. ?Capacity B. ?Available Space C. ?Disk Space D. ?Quota

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Computer Science & Information Technology

A ragged table is a two-dimensional array in which right elements in each row may be empty.

Answer the following statement true (T) or false (F)

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Computer Science & Information Technology