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DOCS-13725 update cursor snapshot documentation #5118

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Mar 23, 2021
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DOCS-13725 update cursor snapshot documentation #5118

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12 changes: 6 additions & 6 deletions source/includes/extracts-concurrency-consistency-recency.yaml
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Expand Up @@ -82,12 +82,12 @@ content: |
indexed field on the index used by the query, then the cursor could
return the same document more than once.

If your collection has a field or fields that are
never modified, you can use a *unique* index on this field or these
fields so that the query will return each document no more than
once. Query with :method:`~cursor.hint()` to explicitly force the
query to use that index.
Queries that use :ref:`unique indexes <index-type-unique>` can, in
some cases, return duplicate values. If a cursor using a unique index
interleaves with a delete and insert of documents sharing the same
unique value, the cursor may return the same unique value twice from
different documents.

---
ref: lock-general
content: |
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