A NUSI subtable row points to one or more base table rows on the same AMP. The relationship between a NUSI value and any individual AMP in a configuration is either 0:1, 1:1, or 1:M.
| Relationship | Meaning |
|---|---|
| 0:1 | An AMP contains no NUSI subtable index rows for a NUSI value. |
| 1:1 | An AMPs contains 1 NUSI subtable index row for a NUSI value. |
| 1:M | An AMP contains more than 1 NUSI subtable index row for a NUSI value. |