Question

When should you select a VSAM file over a normal Sequential file?

Answer 1

There are a number of scenarios in which a VSAM file would be preferred over a Sequential file. Here are a few:

• When performing multiple operations on a file based on a specific key value.
• When performing multiple operations on a file, such as updating a specific record or removing files.
• Whenever you need a file whose contents will need to be modified (update, delete, insert records) frequently.
• Where multiple operations are required like different ways of accessing records either sequentially, with a key, or dynamically.