What are the restrictions of EXPORT / IMPORT process?

  1. Can only be used for VSAM datasets

  2. Dataset created by EXPORT command cannot have a sequential organization

  3. Dataset created by the IMPORT step is not processed until it has gone through corresponding EXPORT step

  4. Dataset created by EXPORT command can only have a sequential organization


Correct Option: A

AI Explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) Can only be used for VSAM datasets - This option is correct because the EXPORT/IMPORT process in mainframe systems is specifically designed for VSAM (Virtual Storage Access Method) datasets. It cannot be used for other types of datasets like sequential datasets or partitioned datasets.

Option B) Dataset created by EXPORT command cannot have a sequential organization - This option is incorrect. The dataset created by the EXPORT command can have a sequential organization. It is not restricted to only VSAM datasets.

Option C) Dataset created by the IMPORT step is not processed until it has gone through the corresponding EXPORT step - This option is incorrect. The IMPORT process can process datasets created by any EXPORT step, regardless of whether they are the corresponding EXPORT step or not. The IMPORT process is not dependent on a specific EXPORT step.

Option D) Dataset created by EXPORT command can only have a sequential organization - This option is incorrect. As mentioned earlier, the dataset created by the EXPORT command can have a sequential organization, but it is not limited to only sequential organization.

The correct answer is A) Can only be used for VSAM datasets. This option is correct because the EXPORT/IMPORT process is restricted to VSAM datasets in mainframe systems.

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