This functionality is built upon the virtual table interface (VTI) provided by IDS.
该功能建立在IDS提供的虚表接口（VTI）之上。
Informix provides access to external data sources through the virtual table interface (VTI).
Informix通过虚拟表接口(VTI)提供对外部数据源的访问。
Informix provides access to external data sources through the virtual table interface (VTI).
Informix通过虚拟表接口(VTI)提供对外部数据源的访问。
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