Keyed Physical Files

What makes a physical file keyed, how key fields relate to DDS field definitions, and why keyed access matters.

~6 min read

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28

Keyed Physical Files

29Logical Files Explained in Depth

30Access Paths and Why They Matter

31SQL Tables vs DDS Physical Files

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Try asking: “What happens if I try to add a record with a duplicate key value to a keyed physical file?”

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