Which of the following may provide many distinct views of the database?

A. the schema
B. the internal view
C. the user view
D. the conceptual view


Answer: C

Computer Science & Information Technology

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Collections are typically static.

Answer the following statement true (T) or false (F)

Computer Science & Information Technology

________ is used to ensure that data is organized most efficiently in a database.

A. Consistency checking B. Validation C. Normalization D. Range checking

Computer Science & Information Technology

Answer the following statement(s) true (T) or false (F)

1. A Get System Value, or GSV, instruction is programmed to get the desired information from the Rockwell Automation PLC 5 controller. 2. The available GSV and SSV objects are related to software revision and hardware firmware level. 3. The number of Instance Name selections depends upon the specific class name selected when programming the instruction. 4. If the attribute being programmed for the GSV or SSV instruction pertains to the specific task, program, or routine in which the instruction is programmed, the word CURRENT can be selected as the Instance Name. 5. When a fault is declared, ControlLogix provides two tags of information for fault identification: the fault type and fault code.

Computer Science & Information Technology

Given the following environment

#include #include int main() { int filedes[2]; pipe(filedes); // Code Fragment Goes Here return 0; } Write a code fragment that duplicates and assigns the read file descriptor to the standard input and then closes the read file descriptor.

Computer Science & Information Technology