Based on ETLA tool developed by the author, the thesis discussed fully the design and implementation of the heterogeneous data integration model and its workflow, explicating realization of metadata.

• 摘要以自行开发的ETLA工具为基础，详细讨论了异构数据源集成模型的设计与实现及其工作流程，还讨论了异构数据源集成模型中元数据的实现。