You're looking for a three page text file that contains names and telephone numbers of drug dealers in the city. Which of the following "hidden" locations would provide enough space for this information?
a. Document metadata
b. The $MFT entry for the file
c. A newly-created registry entry
d. Ahead of the file name in the header
a. c.
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Answer the following statement true (T) or false (F)
Consider the table Professor with attributes Id, Name, Dept, Salary, and Rank and primary key Id, and the statements:
where ssn is a host variable and sal is a literal.
(a) Give an ecient query plan for S1 and state what index (search key, clustered, nonclustered,
B+ tree, hash) is used.
(b) Now suppose, in addition to optimizing S1, we are equally concerned with optimizing the
execution of S2. Assuming sal is a large number (most rows do not satisfy the WHERE
clause) describe the query plan you would like the optimizer to use and any changes that
might need to be made to your previous answer. State what index (search key, clustered,
nonclustered, B+ tree, hash) is used for each statement. Explain your reasoning.
(c) Redo the previous part assuming that sal is a small number (most rows satisfy the
WHERE clause). Explain your reasoning.
What are the components of a C# method declaration?
What will be an ideal response?
In an environment in which large and complex XML vocabularies are developed, different teams might work on different parts of the schema, using the _____ element to combine the different parts into a finished product.
A. include B. import C. export D. combine