What sort of validation rule would you add to a Number field named CustomerAge? Why?
What will be an ideal response?
A CustomerAge could never be less than zero. Likewise, you may want to consider a high value (maybe 125, as the oldest verified human being was over 122 years old) as well to make sure someone does not put in an absurdly high number. I would make the rule Between 0 and 125.
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Answer the following statements true (T) or false (F)
1) The height of a 2-3 tree increases when an element is inserted. 2) Rotation may be used when deleting an element from a 2-3 tree to maintain the balance and properties of a 2-3 tree. 3) A -Tree ensures that each non-root node in the tree is at least 2/3 full. 4) A linked representation of a B-tree is the best way to implement the collection, regardless of the amount of data to be held in the tree. 5) The middle child node of a 3-node in a 2-3 tree has one or two elements whose values are between the values of the elements in the parent node.
The first part of an e-mail address contains a(n) ____________________.
Fill in the blank(s) with the appropriate word(s).
Identify the letter of the choice that best matches the phrase or definition.
A. The area where data pages from the database are stored to minimize the need to read and write from the database file located on the hard disk B. An RDBMS developed by Microsoft to provide a fast, secure, and scalable data access platform C. A broad term that refers to the background processes and structured memory used during interaction with the database D. An RDBMS that is well known for being portable, its ability to run on almost any operating system, and its dominant role in providing solutions on which businesses rely to achieve their core competencies E. A system that is meant to handle cash register or sales transactions. F. A set of instructions that is executed by the operation system and intended to complete a task G. An RDBMS developed by Sun Microsystems that is the most popular open-source database server today H. A database that stores large volumes of historical data for report generating and analyzing I. A subcomponent of a thread; handled by the server to accomplish a task
Which of the following techniques does NOT reduce the power consumption of your computer?
A. turning off your monitor B. assigning sleep mode C. assigning CPU power management features D. deleting unwanted video files