Multiple Choice
A primary key:
A) Is required for all types of files.
B) Should be unique.
C) Is used in conjunction with a secondary key and is less important than the secondary key.
D) Is the only field used to sort the records of a file.
Correct Answer:
Verified
Correct Answer:
Verified
Q12: Sorting is the processing categorizing the data.
Q13: Sequential files can be processed and maintained<br>A)As
Q14: Instructions such as OPEN and READ uses
Q15: Files may be processed:<br>A)Sequentially.<br>B)Randomly through the use
Q16: The secondary key<br>A)Is unique.<br>B)May be used to
Q17: Sequential files<br>A)Start with a given record number
Q18: The logical file number is a reference
Q19: It is important to design the record
Q20: Sequential access file may be processed either
Q22: Buffers are<br>A)Allow data to be transferred from