highway database 中文意思是什麼
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Based on the superiority of distributed database in highway project management, its distributed database is developed in the paper, including solution of data division and redundancy, design of intercurrent mechanism, system structure design and query disposal
摘要在分析分散式數據庫對公路建設項目管理的優越特性基礎上，提出了公路建設項目管理的分佈數據庫，其中包括數據分割和冗餘問題的解決、並發控制機制設計、系統結構設計和查詢處理。 -
The function design of system includes writing down amendment and pretreatment about spatial database and attribute database. this system provides common and basic functions of gis. besides, we can make out the topographical maps, planimetric maps and skiagraph, structure objects of highway construction of design and can inquire two - way between spatial information and attribute information
系統功能設計包括空間數據庫和屬性數據庫的錄入、修改以及預處理；系統還提供了一般gis系統應具備的基本功能，並在此基礎上進行涵蓋公路設計施工的地形圖、平縱縮圖、構造物等圖形信息與屬性信息的雙向查詢，並運用掙值法等對相關屬性進行分類統計以供有關公路工程項目的各方使用。 -
In this dissertation, the newly enacted standard of vehicle classification for highway toll charging is adopted. according to the statistics of main vehicles running on the highway, a general and practical vehicletype database is created
本文採用新頒布的全國統一的收費公路車型分類標準，通過對國內高速公路行駛的主要車輛的統計歸納，建立了較為完備、實用的車型樣本庫。 -
Based on field investigation of pavement conditions in the 2nd phase of guangbei section of national highway 108 ( beijing to kunming ), an e - r ( entity - relational ) model database was developed to help organize the numerous data measured in the real road
通過國道108線廣元段廣北二期工程路面狀況的實地考察，建立了一個e ? r關系數據庫存儲路面狀況信息。 -
4. the key in designing the property database is to preserve the course codes, which are main keys in the old investigating database of highway as the third sorted fields - the county and city, and besides, the city fields and the route codes are inserted as the second and the first sorted fields in each table of the database respectively. 5
設計屬性數據庫的關鍵是在本系統中保留原有公路普查數據庫里的「路線代碼」主鍵作為高速公路屬性數據庫里的第三層「縣市路段」索引欄位，另外，在各數據庫表中還增加了「地市欄位、路線代碼」作為第二層次、第一層次進行索引的主鍵。 -
A model of highway project quota distributed database based on entity relation method
方法的公路工程定額分散式數據庫模型研究
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