In view of the significance of query decomposition and optimization in the Heterogeneous Data Resource Integration System, in-depth research on this aspect was mainly conducted.

考虑到查询分解及查询优化在异构数据集成系统中的重要意义，主要就这一方面进行了深入研究。

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Under the overall authority of the Assistant Director-General, Education Sector, and the direct supervision of the Director of the Division for Planning and Development of Education, the incumbent will lead the design, coordination, execution and evaluation efforts for programme and projects and play a significant role in policy and strategy direction, development and integration, and resource optimization.

UNESCO: Vacancy : Chief of Section (11/5/2011) (# ED 385 - (P5))

Under the overall authority of the Assistant Director-General, Education Sector, and the direct supervision of the Director of the Division of Education for Peace and Sustainable Development, the incumbent will lead the design, coordination, execution and evaluation efforts for programme and projects and play a significant role in policy and strategy direction, development and integration, and resource optimization.

UNESCO: Vacancy : Chief of Section (11/5/2011) (ED 052 - (P5))

Under the overall authority of the Assistant Director-General, Education Sector, and the direct supervision of the Director of the Division for Basic to Higher Education and Learning, the incumbent will lead the design, coordination, execution and evaluation efforts for programme and projects and play a significant role in policy and strategy direction, development and integration, and resource optimization.

UNESCO: Vacancy : Chief of Section (11/5/2011) (ED 197 - (P5))