【摘要】 随着数据仓库技术的广泛应用,如何存储数据并保证数据长期可用性已成为近年来的研究重点。文中阐述了在数据仓库环境下存在的数据长期可用性问题,并分析了已有解决方案的优劣,从而给出了一种较为完善的解决方案———模拟策略的核心思想和具体实现过程,以及相关的关键技术,指出了保障数据可用性的未来研究方向。该策略通过模拟历史的硬件平台环境,较好地解决了数据仓库中大量历史数据的长期可用性问题。更多还原

【Abstract】 With the application of data warehouse technology abroad,how to save data and assure the readability of data long-term has become an important research direction recently.The paper expounds data usability problems in data warehouse,analyses the merits and shortages of some methods,and introduces an ideal scheme——Emulation Strategy,including its primary thinking,detailed realization process and related key technologies,future research direction of data usability is also presented.The strategy better resolves the question of a mass of history data usability in data warehouse through simulating former hardware platform.更多还原