A ________ is a column (or set of columns) which have a unique value that cannot be duplicated in other rows?
a. primary key.
b. query.
c. SQL statement.
d. lookup value.
a. primary key.
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The float data type is considered ___________ precision and the double data type is considered __________ precision.
a. single, double b. double, single c. floating-point, double d. floating-point, integer e. None of these
For which functions is dynamic binding used?
a. all class functions b. all template functions c. non-virtual class functions d. virtual class functions e. none of the above
When a value is passed to a called function with only copies of the values contained in the arguments at the time of the call, the passed argument is referred to as a ____.
a. pass by reference b. call by value c. call by reference d. passed by value
Tommy handles access control requests for his organization. A user approaches him and explains that he needs access to the human resources database in order to complete a headcount analysis requested by the CFO. What has the user demonstrated successfully to Tommy?
A. Clearance B. Separation of duties C. Need to know D. Isolation