The sample code provides the Data Definition Language (DDL) and Integration Exchange Format (IXF) files which make up the structure.
该样本代码提供了组成该结构的数据定义语言（Data Definition Language，DDL）和集成交换格式（Integration Exchange Format，IXF）文件。
At present, the modes of the integration of multi-source spatial data are data format exchange, data interoperation, and directly data access.
目前多源空间数据集成的模式有数据格式转换、数据互操作和直接数据访问。
IMDL USES RDF as information exchange format, and implements protocol translation, query translation and result integration.
系统中间过程交换信息格式采用RDF，完成协议转换、查询转换和结果合成。
Also, we described three means to realize data integration: data format exchange, data interoperability, direct data access.
给出了实现多源数据集成的数据格式转换、数据互操作和直接数据访问方法。
Also, we described three means to realize data integration: data format exchange, data interoperability, direct data access.
给出了实现多源数据集成的数据格式转换、数据互操作和直接数据访问方法。
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