What is a lookup table used for?
A) It is the lowest value for a specific category or series.
B) It looks up a value and returns a related result.
C) It is a reference to a cell containing a value to look up.
D) It contains data for the basis of a lookup and the data to be retrieved.
D
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Which of the following is required in a recursive function?
a) Exactly one recursive call and exactly one stopping case. b) Calls to functions other than itself. c) One or more stopping cases after a sequence of calls to one or more recursive cases. d) A static local variable. e) One or more stopping cases that are guaranteed to be reached.
Client programs can query __________ to get values, but they cannot modify them.
a. Read-Only properties b. Get/Set properties c. Private methods d. Public properties
Case-Based Critical Thinking QuestionsCase 4-2Aaron is developing a Web site for the dinosaur exhibit at his local science museum. He has used separate layers to create an animation of a moving dinosaur. However, in the existing animation, the individual parts of the dinosaur-its head and tail, for example-remain stationary in relation to the dinosaur, and Aaron would like to animate the body parts so that the dinosaur moves more realistically. He asks you what approach you would recommend. Aaron asks you for more information about the panel that makes it easier to manage the elements of a Flash document. Which of the following is NOT an example of a task that you can perform with this panel?
A. Search for a specific element B. Insert an element in the Timeline of another element C. Find all instances of a particular symbol D. Print a list of the document's elements
Consider a brokerage firm database with relations Holdings(AccountId, StockSymbol, Price, Quantity) and Balance(AccountId, Balance). Write the triggers for maintaining the correctness of the account balance when stock is bought (a tuple is added to Holdings or Quantity is incremented) or sold (a tuple is deleted from Holdings or Quantity is decremented).
Write both row level and statement level triggers.