发明名称 |
SHARING A SINGLE INSTANCE OF A USER DEFINED TYPE |
摘要 |
Methods, systems and apparatus for implementing behavior of a user defined type (UDT) in a database by providing a data table with multiple rows and generating a UDT table having only a single row. An instance of a UDT is created and stored in the single row of the UDT table. A query having a Cartesian product is implemented to join the UDT table and data table for invoking behavior of the UDT and generating a resultant data table without increasing cardinality thereof. The single instance of the UDT may be shared amongst several users of the database as a result of all required persisted objects of the UDT residing within only a single row of the UDT table.
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申请公布号 |
US2008243911(A1) |
申请公布日期 |
2008.10.02 |
申请号 |
US20070691719 |
申请日期 |
2007.03.27 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
MARTINEZ ANDREA C;MATULA CHARLES;STARKE DAVID H;WILEY GREGORY R |
分类号 |
G06F17/00 |
主分类号 |
G06F17/00 |
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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