发明名称 |
Legacy subclassing |
摘要 |
A method and system for mapping between relational schema and object schema, wherein the relational schema includes a table having a tiebreaker column. In accordance with the present invention, an object-oriented application program may instantiate a persistent dependent object with one of two or more specific instances that is selected in response to the value of a data element in a tiebreaker column. Alternatively, an object-oriented application program may instantiate a persistent entity object in accordance with one of two or more entity classes that is selected in response to the value of a data element in a tiebreaker column.
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申请公布号 |
US5956730(A) |
申请公布日期 |
1999.09.21 |
申请号 |
US19970912020 |
申请日期 |
1997.08.15 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BURROUGHS, TRACY KIM;LEE, WILSON D.;ROGERS, CYNTHIA ANN;ZABOROWSKI, LAURA JANE |
分类号 |
G06F17/30;(IPC1-7):G06F17/30 |
主分类号 |
G06F17/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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