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ID: 27561, Implementing Auto-Increment/Identity in Oracle
Macro to generate sequence and trigger for Oracle to implement a feature similar to auto-increment/identity in MS SQL Server and other databases.
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For ER/Studio Data Architect, Version 8.5
to 8.5
106 downloads
Copyright: No significant restrictions
Size: 881 bytes
Updated on Fri, 15 Jan 2010 11:58:57 GMT
Originally uploaded on Fri, 15 Jan 2010 11:58:57 GMT
SHA1 Hash: B17E73A685AF9777FD3CCFADFFB0503BF47BCF0E
MD5 Hash: 85F049737A83E023632C9BF0AD6E4158
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| Description
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ER/Studio uses and generates code for identity property if the target platform supports the notion of identity or auto-increment field such as Microsoft SQL Server. In Oracle 10g there is no identity property that can be assigned to a column. Rather, a user must define the necessary sequence and triggers to populate the content of the desired field with value. ER/Studio does not generate such customized code. However, one can write a macro for example that creates the sequences and triggers. Attached is a sample macro that basically performs this task. Please open your diagram, ensure that you have specified the identity property in the logical model, select an Oracle physical model, select the "Macros" tab page in the explorer, and right-click on this macro and select to run the macro. The macro creates a sequence for each table named: table name + "_SEQ". It also creates a trigger named table name + "_BI_TRG". You can edit this macro to change this naming convention to suit your needs.
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