data set access method 中文意思是什麼

data set access method 解釋
數據集存取
  • data : n 1 資料,材料〈此詞系 datum 的復數。但 datum 罕用,一般即以 data 作為集合詞,在口語中往往用單數...
  • set : SET =safe electronic transaction 安全電子交易〈指用信用卡通過因特網支付款項的商業交易〉。n 【埃...
  • access : n. 1. 接近;會面。2. 捷徑,門路〈指方法、手段〉;檢查孔;進路,入口;【自動化】(存貯器的)存取。3. (病的)發作;(怒氣等的)爆發。4. 增加。
  • method : n 1 方法,方式;順序。2 (思想、言談上的)條理,規律,秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. This new method has the capability of calculating complicated 3d grain burning surface. dealing with evolving interface of complicated material and topology change ( splitting. breaking. merging ), based on level set method and burning surface process law. this technique can get accurate area of burning surface each moment and data of geometrical structure that provide access to examination of grain change in the srm working process. 2

    結合固體火箭發動機燃面推移規律,在等值面函數法基礎上開發的裝藥燃面演算法能夠成功計算任意復雜三維裝藥燃面,並且具有處理復雜物質邊界及其拓撲結構發生變化(如分裂、破碎、合併)的能力,能夠準確計算出發動機工作過程中各個時刻裝藥的燃燒面積,同時輸出裝藥幾何構形數據直觀地觀察裝藥的變化情況; 2
  2. Firstly, in this paper, we review the histories of xml and xml database, and all kinds of data models used widely now. then we review traditional access control policies and policies specially used on xml, and present a new expression method of access set on xml based on child tree of w3c data model. and we bring rbac model into xml database and present a new xml access model x - rbac. because the usage of data in databases has high frequency, we present an ids model based on access set density to logging the potential security threats. and then we introduce the design and implementation of a prototype of our native xml database nhx and its access control system. finally, we draw a conclusion for this paper and the future work

    本文首先回顧了xml及xml數據庫的歷史,並總結了目前廣泛使用的xml數據模型,在分析了各種傳統數據庫訪問控制策略,以及xml的專有訪問控制策略的優缺點后,基於w3c的xml數據模型,提出了一種基於子樹的具有高彈性的便於實現的的訪問區域表示法,並將rbac模型引入進來,提出了一種適用於xml數據庫的訪問控制模型x - rbac ,同時為了區分xml數據庫訪問中的合法訪問和合理訪問,我們根據數據庫訪問具有頻繁性這一特徵,提出了一種基於區域訪問密度的入侵檢測模型( ids ) ,以對隱藏在正常訪問中的潛在安全威脅進行報警和日誌。
  3. Analyze the systematic structure of the product data management system and study the object representation of the product data integration model, the product data attribute and operation, the product information modeling and the theory and method of access control modeling in order to set up the object model of the product data access control and describe the data base conversion of the object model and executive method

    分析產品數據管理系統的體系結構,研究產品數據的集成模型的對象表示,產品數據屬性和操作,產品信息建模和訪問控制建模的理論和方法;建立產品數據訪問控制的對象模型,並說明對象模型的數據庫轉換和實現方法。
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