A checkbox is created in Expression Web by adding an Input (Checkbox) form ____ to the form element.
A. control
B. action
C. direction
D. behavior
Answer: A
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To add an item to a List Box control with code, you call the control’s ____________method.
a. Add.Items b. Items.Add c. Items.Append d. Items.Insert
A virus attack is also known as a ________
A) logic bomb B) moneyload C) time bomb D) payload
Match the following shortcut actions to the selection in Word or PowerPoint:
I. double-click II. triple-click III. press and hold Ctrl while you click to select IV. press and hold Shift while you press the right arrow key V. press and hold Ctrl while you press the letter A A. a sentence B. a paragraph C. one character to the right D. entire document E. a word
Consider the following relations that represent part of a real estate database:
``` Agent(Id, AgentName) House(Address, OwnerId, AgentId) Amenity(Address, Feature) ``` The Agent relation keeps information on real estate agents, the House relation has information on who is selling the house and the agent involved, and the Amenity relation provides information on the features of each house. Each relation has its keys underlined. Consider the following query: ``` SELECT H.OwnerId, A.AgentName FROM House H, Agent A, Amenity Y WHERE H.Address=Y.Address AND A.Id = H.AgentId AND Y.Feature = ’5BR’ AND H.AgentId = ’007’ ``` Assume that the bu?er space available for this query has 5 pages and that the following statistics and indices are available: 1. Amenity 10,000 records on 1000 houses, 5 records per page Clustered 2-level B+ tree index on Address Unclustered hash index on Feature, 50 features 2. Agent 200 agents with 10 tuples per page Unclustered hash index on Id 3. House 1000 houses with 4 records per page Unclustered hash index on AgentId Clustered 2-level B+ tree index on Address Answer the following questions (and explain how you arrived at your solutions). a. Draw a fully pushed query tree corresponding to the above query. b. Find the best query plan to evaluate the above query and estimate its cost. c. Find the next-best plan and estimate its cost.