Question: Suppose each record in a file were connected to the prior record and the next record in key sequence using pointers. Thus, each record might

Suppose each record in a file were connected to the prior record and the next record in key sequence using pointers. Thus, each record might have the following format: Primary key, other attributes, pointer to prior record, pointer to next record
a. What would be the advantages of this file organization compared with a sequential file organization?
b. In contrast with a sequential file organization, would it be possible to keep the records in multiple sequences? Why or why not?

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