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8 | 8 | <body bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF">
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9 | 9 | <h1><a name="section_1">PostgreSQL TODO List</a></h1>
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10 | 10 | <p>Current maintainer: Bruce Momjian (<a href="mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</a>)<br/>
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11 |
| -Last updated: Fri Sep 2 15:39:11 EDT 2005 |
| 11 | +Last updated: Fri Sep 2 15:51:34 EDT 2005 |
12 | 12 | </p>
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13 | 13 | <p>The most recent version of this document can be viewed at<br/>
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14 | 14 | <a href="http://www.postgresql.org/docs/faqs.TODO.html">http://www.postgresql.org/docs/faqs.TODO.html</a>.
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@@ -876,13 +876,13 @@ <h1><a name="section_21">Miscellaneous Performance</a></h1>
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876 | 876 | xmax), cmin, cmax, and if the transaction was expiring a row from a
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877 | 877 | another transaction, the fields stored were xmin (cmin was not
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878 | 878 | needed), xmax, and cmax. Such a system worked because a transaction
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879 |
| - could only see committed rows from another transaction. However, |
| 879 | + could only see rows from another completed transaction. However, |
880 | 880 | subtransactions can see rows from outer transactions, and once the
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881 | 881 | subtransaction completes, the outer transaction continues, requiring
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882 | 882 | the storage of all four fields. With subtransactions, an outer
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883 | 883 | transaction can create a row, a subtransaction expire it, and when the
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884 | 884 | subtransaction completes, the outer transaction still has to have
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885 |
| - proper visibility of the row, for example, for cursors. |
| 885 | + proper visibility of the row's cmin, for example, for cursors. |
886 | 886 | </p>
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887 | 887 | <p> One possible solution is to create a phantom cid which represents a
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888 | 888 | cmin/cmax pair and is stored in local memory.
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