MIDI files contain a set of instructions for synthesizing music which are called MIDI ____.
A. addresses
B. e-mails
C. sound bytes
D. messages
Answer: D
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Answer the following statements true (T) or false (F)
1) In a radix sort, the radix is the number of elements to be sorted. 2) The underlying data structure used in a radix sort is a stack 3) A linear search always requires more comparisons than a binary search. 4) If there are more items in a search pool, then it will typically require more comparisons to find an item. 5) Bubble sort is the most efficient searching algorithm.
Consider the following query:
``` SELECT T.CrsCode, T.Grade FROM Transcript T, Student S WHERE T.StudId = S.Id AND S.Name = ’Joe’ ``` Assume that Id is the primary key of Student,(CrsCode, Semester, StudId) is the primary key of Transcript,andthatName is not unique. Set up a database containing these two tables on the DBMS available to you. Initialize the tables with a large number of rows. Write a program that measures the query execution time by reading the clock before and after submitting the query. Be sure to ?ush the cache between successive measurements (perhaps by executing a query that randomly reads a su?cient number of rows of a large dummy table). a. Test your understanding by making an educated guess of what query plan will be chosen by the DBMS assuming that there are no indices other than those for the primary keys. Run the query, output the query plan, and check your guess. Measure the response time. b. Now assume that an unclustered index on StudId on Transcript is added. What query plan would you expect? Run the query, check your answer, and measure the response time. Try the query under two conditions: Joe has taken very few courses; Joe has taken many courses. c. In addition to the index added in (b), assume that an unclustered index on Student on Name has been added and repeat the experiment.
Row labels (1, 2, 3, etc.) appear in a Word table
Indicate whether the statement is true or false
On the ribbon, on the Data tab, use commands in the ________ group to bring data from outside Excel into an Excel worksheet
A) Connections B) Data Tools C) Analysis D) Get External Data