Give An Example Of A Database Application In Which The Pointer Method

1.	Give An Example Of A Database Application In Which The Pointer Method Of Representing Variable-length Records Is Preferable To The Reserved-space Method?
Answer» USING the POINTER method, a join operation on attributes which are only in the anchor block can be performed on only this smaller amount of data, RATHER than on the entire relation, as would be the case using the RESERVED space method. Therefore, in this join EXAMPLE, the pointer method is preferable. Using the pointer method, a join operation on attributes which are only in the anchor block can be performed on only this smaller amount of data, rather than on the entire relation, as would be the case using the reserved space method. Therefore, in this join example, the pointer method is preferable.

Give An Example Of A Database Application In Which The Pointer Method Of Representing Variable-length Records Is Preferable To The Reserved-space Method?

Answer»

USING the POINTER method, a join operation on attributes which are only in the anchor block can be performed on only this smaller amount of data, RATHER than on the entire relation, as would be the case using the RESERVED space method. Therefore, in this join EXAMPLE, the pointer method is preferable.

Using the pointer method, a join operation on attributes which are only in the anchor block can be performed on only this smaller amount of data, rather than on the entire relation, as would be the case using the reserved space method. Therefore, in this join example, the pointer method is preferable.

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