Research on Technique of Uniform Retrieval Surface

The meteorological information storage retrieval system is the system which can uniformly organize and manage the real time meteorological data and the historical meteorological data, and also provides retrieval service. Due to the large amount of data and high price of disk, not all the data can be stored on the disk. Thus, according to their access frequency, the data will be retained on disk which is the first storage device, automatic tape library which is the second storage device and off line tape which is the third storage device,respectively. And the data are managed by commercial DBMS, migration software and archive software. However, the three kinds of software can't uniformly manage data distributed over three kinds of storage device, so a problem that user's retrieval surface isn't uniform is brought about. To solve this problem, the retrieval technique using uniform surface from disk or tape based on commercial DBMS is discussed and a solution is presented.

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