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cooltest 2003-08-23
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应该都知道的吧？帮忙啊？
jiezhi 2003-08-23
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urowid 是"universal rowids"的意思。
rowid是物理的地址，urowid是邏輯的地址。
Oracle uses "universal rowids" (urowids) to store the addresses of index-organized
and foreign tables. Index-organized tables have logical urowids and foreign tables
have foreign urowids. Both types of urowid are stored in the ROWID pseudocolumn
(as are the physical rowids of heap-organized tables).
rowid是物理的地址，urowid是邏輯的地址。
Oracle uses "universal rowids" (urowids) to store the addresses of index-organized
and foreign tables. Index-organized tables have logical urowids and foreign tables
have foreign urowids. Both types of urowid are stored in the ROWID pseudocolumn
(as are the physical rowids of heap-organized tables).
