本文選題：關(guān)系數(shù)據(jù)庫 + 時空數(shù)據(jù)模型�。� 參考：《河北師范大學》2017年碩士論文

【摘要】：隨著信息技術(shù)的發(fā)展,時空數(shù)據(jù)的獲取和應(yīng)用更加容易。如何更好地利用時空數(shù)據(jù),對其內(nèi)部的數(shù)據(jù)價值進行挖掘利用是目前的研究熱點之一。柵格數(shù)據(jù)在空間分析方面具有得天獨厚的優(yōu)勢,關(guān)系數(shù)據(jù)庫技術(shù)和基于關(guān)系數(shù)據(jù)庫的查詢語言已經(jīng)成熟。將關(guān)系數(shù)據(jù)庫和柵格數(shù)據(jù)通過查詢語言關(guān)聯(lián),并通過GDAL提供的接口生成可視化的柵格圖片,具有較好的實用價值。本文首先從關(guān)系數(shù)據(jù)庫擴展時間和空間的方法入手,對當前國內(nèi)外有關(guān)時空數(shù)據(jù)模型的研究進展進行了論述,并針對現(xiàn)有的歷史空間信息的存儲和表達方法存在的問題進行了討論,從應(yīng)用角度出發(fā)設(shè)計了一種基于歷史空間網(wǎng)格信息的關(guān)系數(shù)據(jù)庫,并論述了它的時間語義、空間語義、屬性特征及其時空變化,同時,介紹了GDAL在柵格數(shù)據(jù)生成中的作用及其內(nèi)部數(shù)據(jù)集、坐標系統(tǒng)、波段、顏色表的特點。其次,基于擴展型關(guān)系數(shù)據(jù)庫的E_R模型實現(xiàn)了數(shù)據(jù)庫的邏輯模型和字段的編碼設(shè)計,其設(shè)計符合第三范式要求,具有通用性。同時,在關(guān)系數(shù)據(jù)庫的基礎(chǔ)上,實現(xiàn)了歷史空間信息的時間、空間、屬性及兩者以上的復合查詢功能以及時態(tài)柵格表達模塊的設(shè)計和實現(xiàn)。能夠?qū)^(qū)域的整體或局部的不同時空的專題信息的變化進行查詢,并生成對應(yīng)的屬性表:時態(tài)柵格表達模塊的實現(xiàn)解決了數(shù)據(jù)庫數(shù)據(jù)從靜態(tài)的屬性信息到時空信息可視化表達的問題。最后,利用公元612年到公元959年的京津冀歷史行政區(qū)數(shù)據(jù)對提出的擴展型關(guān)系數(shù)據(jù)庫和時態(tài)柵格表達模塊進行了驗證,結(jié)果表明:擴展型關(guān)系數(shù)據(jù)庫可以實現(xiàn)時空信息的存儲、管理、分析、顯示的需求,通過柵格可以準確、直觀、靈活的表達時空信息并在此基礎(chǔ)上通過接口實現(xiàn)柵格的空間分析功能,效率較好,易于推廣。
[Abstract]:With the development of information technology, the acquisition and application of spatiotemporal data become easier. How to make better use of spatiotemporal data and how to mine and utilize the internal data value is one of the research hotspots at present. Raster data has a unique advantage in spatial analysis, and the technology of relational database and query language based on relational database have matured. The relational database and the raster data are associated with the query language, and the visual raster images are generated by the interface provided by GDAL, which has good practical value. This paper begins with the methods of expanding time and space of relational database, and discusses the research progress of spatio-temporal data model at home and abroad. This paper discusses the problems existing in the existing methods of storing and expressing historical spatial information, designs a relational database based on historical spatial grid information from the point of view of application, and discusses its temporal and spatial semantics. At the same time, the function of GDAL in raster data generation and the characteristics of internal data set, coordinate system, band and color table are introduced. Secondly, Estur model based on extended relational database implements the logical model and field coding design of the database, which meets the requirements of the third normal form and is universal. At the same time, on the basis of relational database, the design and implementation of temporal grid representation module of historical spatial information are realized. The ability to inquire about changes in thematic information about the whole or part of a region in different time and space, The realization of temporal grid representation module solves the problem of database data from static attribute information to spatio-temporal information visualization. Finally, the extended relational database and temporal raster representation module are verified by using the data of Beijing-Tianjin-Hebei historical administrative region from AD 612 to AD 959. The results show that the extended relational database can store space-time information. The requirements of management, analysis and display can be expressed accurately, intuitively and flexibly through the grid. On the basis of this, the spatial analysis function of the grid can be realized through the interface, which is efficient and easy to popularize.
【學位授予單位】：河北師范大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：D691;P208

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