To exit the mode shown in the accompanying figure, press the ___________ key.
Fill in the blank(s) with the appropriate word(s).
Esc
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Consider a brokerage ?rm database with relations Holdings(AccountId, StockSymbol, CurrentPrice, 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), sold (a tuple is deleted from Holdings or Quantity is decremented), or a price change occurs. Solve the
problem using both row-level and statement-level triggers. Give an example of a situation when row-level triggers are more appropriate for the above problem and when statement-level triggers are more appropriate. What will be an ideal response?
The ________ dialog box allows both linking and importing data sources
Fill in the blank(s) with correct word
If an administrator resets a user's password, any files the user has encrypted using EFS will become inaccessible unless he has backed up his EFS keys or a recovery agent decrypts them
Indicate whether the statement is true or false
Which of the following statements is false?
a. You can reuse a class many times to build many objects. b. The overhead of reusing classes instead of building new ones can discourage re-use. c. Reuse also helps you build more reliable and effective systems, because existing classes and components often have gone through extensive testing, debugging and performance tuning. d. Just as the notion of interchangeable parts was crucial to the Industrial Revolution, reusable classes are crucial to the software revolution that has been spurred by object technology.