What happens if there is no index defined for a query? What is its impact?
What will be an ideal response?
If no index is defined, a query will require the database engine to undertake a full table scan on every record within the table in order to find matches. For large tables, this has a serious impact on performance.
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The algorithm that can run in O( n ) time if the elements are nearly sorted, yet does not depend on the range of values, is:
A. insertion sort B. quicksort C. counting sort D. heapsort
Specifying a port that is already in use or specifying an invalid port number when creating a DatagramSocket results in a __________.
a. SocketException. b. PortInUseException. c. PortException. d. ConnectException.
In ________ view, the PowerPoint window is divided into two areas–the Slide pane and the left pane
Fill in the blank(s) with correct word
If you set a database _____ all users must enter that combination of characters before they are allowed to open the database.
Fill in the blank(s) with the appropriate word(s).