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- The abstract data model(ADT) of spatial data,vector and raster,is defined firstly based on basic types. 首先基于基本类型派生定义矢量和栅格抽象数据类型,在此基础上定义时空数据类型为一系列空间类型的时间片序列。
- A hybrid 3D spatial data model based on multi-DEMs and quasi tri-prism volume(QTPV) is proposed. 提出一种基于多层DEM与似三棱柱体元(QTPV)的混合三维数据模型。
- temporal spatial data organization 时空数据组织
- Two kinds of multi-resolution spatial data model are studied in this paper. One is the Feature Model and HOOM Model based on DLG data. 论文主要对两种类型的多分辨率空间数据模型理论和实现技术进行研究,第一类空间数据是数字线划图数据DLG,第二类是数字高程模型数据DEM。
- Moreover this thesis summarize the main step of construction ofindustry class spatial data model based on geodatabase. (1)Analyze thedata characteristics. 另外,本论文通过对航空物探数据模型的设计,总结基于 Geodatabase 构建行业级空间数据模型的步骤及每一步的工作:(1)现实世界分析的主要任务是分析该行业数据获取方式及数据特点;
- ORDBMS Oracle9i provides a new SQL (Spatial Query Language), the spatial data model, the standardization of spatial connection and the set of spatial manipulation. 对象关系型数据库管理系统Oracle9i提供了一种全新的SQL(Spatial Query Language)、空间数据模型、空间关系规范化及空间操作集。
- Abstract: Following a discussion of the 3D GIS data model in current use,anirregular triangle prism net (TPN) data model is proposed,together with an analysis of its data structure and spatial data operation. 文摘:文中对现有的三维GIS数据模型进行了讨论,然后结合地学结构的特点,提出了一种基于体素的不规则三棱柱网络(TPN)数据模型,并分析了其数据结构和空间数据操作。
- Aiming at the actuality that current WebGIS systems are mostly based on the black-box data model, the paper introduces the step-service model to access spatial data sources on the web, which is presented by Allan Doyle. 然后,针对目前的WebGIS系统大多基于“黑箱数据模型”的现状,介绍了Allan Doyle提出的在互联网上访问空间数据源的分步骤服务模型。
- The Research of Temporal Spatial Data Organization for the Urban Planning Information System 城市规划信息系统的时空数据组织方案
- A new object-oriented spatial data model based on RDBMS 一种基于RDBMS的面向对象空间数据模型
- A Spatial Data Model Based on Rdbms and Its Special Application 一种基于关系数据库的空间数据模型及其特殊应用
- Then the spatial-temporal data model is defined as a series of temporal slices of spatial ADT, which includes both data objects and functions. 该抽象数据类型的定义包括其数据对象和相关操作,将其嵌入对象关系数据库中,扩展其时空数据的存储和查询能力。
- Spatio-temporal DBMS (database management system) is a DBMS which can handle the temporal data and the spatial data. 时空数据库管理系统(Spatio-Temporal DBMS)是能够同时处理时态数据和空间数据的数据库管理系统。
- Data of SWEM include spatial data and table data. 水土保持监测数据根据数据格式划分,可分为空间数据和表格数据。
- The existing temporal spatial analysis methods, such as microstate, frequency domain analysis and event related coherence, are introduced in this paper. 本文详细介绍了这些分析方法。
- Spatial Data Model Based on Geological and Mineral Resources Point-source Information System 基于地矿点源信息系统的空间数据模型研究
- The Feature-based Spatio-Temporal Data Model is a set of interrelated temporal feature. 在基于特征的时空数据模型是一组相互关联的时空特征。
- This buffer strategy takes into account temporal locality and spatial locality of the spatial data access,which are considered by both LFU and LRU algorithm. 提出的缓存策略充分考虑了空间数据访问所具有的时间局部性和空间局部性,兼有LRU和LFU算法的优点。
- Class is based on the XPath data model. 类基于XPath数据模型。
- A data model is a plan for building a database. 一个资料模型就是对建立一个资料库的规划。