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(1) | , . |
(1.1) | SQL-92 . - Restrict, No Action, Cascade Set Nulls, -. ( Restrict -, -; Cascade -; Set Nulls ; No Action, Restricted, , .) |
(1.2) | . - SQL-92, , . |
(1.3) | - , WITH CHECK OPTION . , . |
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(2.1) | DB2 BLOBs 2 . , . |
(2.2) | , , , . |
(2.3) | , SQL . |
(3) | |
(3.1) | SQL SQL-92 , SQL-3. |
(3.2) | , SQL-92, . |
(4) | Internet |
(4.1) | , , DB2, HTML SQL. |
IBM . , -, , - ObjectStore.