The processing speed of a microprocessor is typically represented by its ________.
A. ALU
B. clock speed
C. bus line
D. control unit
Answer: B
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Consider the following database schema:
1. Supplier(SName, ItemName, Price)—supplier SName sells item ItemName at Price
2. Customer(CName, Address)—customer CName lives at Address.
3. Order(CName, SName, ItemName, Qty)—customer CName has ordered Qty of item ItemName from supplier SName.
4. Item(ItemName, Description)—information about items.
(a) Draw the E-R diagram from which the above schema might have been derived. Specify the keys.
(b) Suppose now that you want to add the following constraint to this diagram: Every item is supplied by some supplier . Modify the diagram to accommodate this constraint. Also show how this new diagram can be translated back to the relational model.
(c) Repeat parts (a) and (b) in UML.
With ____________________ editing, you select the text to be moved and then drag the selected item to the new location and then insert it there.
Fill in the blank(s) with the appropriate word(s).
What is the maximum number of key comparisons made when searching a list L of length n for an item using a binary search?
A. log n B. 2 * log2n + 2 C. 2 D. n
The variation of SATA that is used for external drives is called ________
Fill in the blank(s) with the appropriate word(s).