_____ are naturally recursive structures.
A. Trees
B. Scalar data items
C. Abstract data types
D. Arrays
Answer: A
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Create an ER diagram for each of the following descriptions:
(a) Each company operates four departments, and each department belongs to one company. (Note when the exact cardinality is known (in this example, 4) a value can replace the multiplicity range. (b) Each department in part (a) employs one or more employees, and each employee works for one department. (c) Each of the employees in part (b) may or may not have one or more dependants, and each dependant belongs to one employee. (d) Each employee in part (c) may or may not have an employment history. (e) Represent all the ER diagrams described in (a), (b), (c), and (d) as a single ER diagram.
Which of the following statements are true?
a. A class should describe a single entity and all the class operations should logically fit together to support a coherent purpose. b. A class should always contain a no-arg constructor. c. The constructors must always be public. d. The constructors may be protected.
Which is not a process ink color?
A. green B. cyan C. magenta D. yellow
To create a main procedure, you type a(n) ____ statement for each procedure you want to run.
A. Dim B. Call C. Variable D. Instruction