Which of the following statements is false?
a) The HasValue property returns true if a nullable-type variable contains a value;
otherwise, it returns false.
b) The Value property returns the nullable-type variable’s underlying value.
c) The null coalescing operator (??) has two operands. If the left operand is not null, the entire ?? expression evaluates to the left operand’s value; otherwise, it evaluates to the right operand’s value.
d) All of the above statements are true.
d) All of the above statements are true.
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Yahoo has developed its own Linux-based operating system called Chrome OS.
Answer the following statement true (T) or false (F)
Suppose we have a sequential (ordered) file of 100000 records where each record is 240 bytes. Assume that B=2400 bytes, s=16 ms, rd=8.3 ms, and btt=0.8 ms. Suppose we want to make X independent random records from the file. We could make X random block reads or we could perform one exhaustive read of the entire file looking for those X records. The question is to decide when it would be more efficient to perform one exhaustive read of the entire file than to perform X individual random reads. That is, what is the value for X when an exhaustive read of the file is more efficient than random X reads? Develop this function of X.
What will be an ideal response?
The feature that automatically moves words to the beginning of the next line if they do not fit is called ________
Fill in the blank(s) with correct word
FIGURE AC 3-1
To access the dialog box shown in Figure AC 3-1 above, you first have to access the ____.
A. Simple Query menu B. New Query dialog box C. Simple Query gallery D. New Query Datasheet