星型架構 的英文怎麼說
中文拼音 [xīngxíngjiàgòu]
星型架構
英文
star schema-
A concept of step - by - step round angle surface for transition and its mathematic modeling was put forward first time. different fiber placement patterns ( 0, 90and 45 ply ) and their simulation module were designed. a simulation system for fp - - - - - - simjoint system for satellite triangle conjunction was composted, which include mandrel modeling, fiber placement trace in mandrel simulation and robot ' s kinematics simulation
詳盡描述了構架式衛星接頭的幾何建模過程，針對所研究對象的特點，提出了用於變截面曲面之間過渡的漸進圓角過渡曲面的概念，並建立了相應的數學模型；針對構架式衛星接頭設計了90 、 0和45等不同角度對應的纖維路徑和鋪絲線型模擬模塊。The modal neural files ( mnf ) derived from i - deas modal solution were imported into the adams / flex. then the flexible multi body dynamics simulations of the deployable truss system were carried on when the truss is assembled with a spacecraft. the dynamics characteristics of the truss in the moment of folded state and completely deployed state were listed
利用i - deas對桁架單元的模態進行計算，生成模態中性文件，然後將其輸入到adams / flex里與衛星組成柔性空間展開桁架結構模型，進行展開桁架的多柔體動力學模擬計算。This paper describes the basic features and components of data warehouse system, and deals how to use description - driven technology to integrate different data warehouse systems, how to implement the change from one data schema to another, how to clean dirty data in data transformation process, and how to exchange data among different components or systems. at last, this paper takes two products to illustrate how to implement systems following these principles and methods. these two products are the e - chain system as an application in commerce domain, and the ftedws system as an application in engineer test domain
本文分析了數據倉庫系統軟體的基本特徵，提出了利用描述驅動技術來實現數據倉庫系統的集成管理，描述了etl操作和分析處理的基本處理流程和相應的執行構件，定義了集成框架中數據模式轉換規則和數掘清洗規則，構建了一個基於星型模式和對象模型的分析模型和相應的數據查詢語言，提出了集成框架系統構件間的數據交換標準，並定義了基於此標準的的數據交換和元數據交換方法，探討了集成框架標準構件管理的基本方法和權限管理，最後介紹了數據倉庫集成框架系統在商業領域的應用實例e - chain系統和工程試驗領域的應用實例ftedws系統。Use of a star or snowflake schema to organize the data within the database
使用星型架構或雪花架構來組織數據庫內的數據。A group of database operations combined into a logical unit of work that is either wholly committed or rolled back
對星型架構的一種擴展，即，由多個表定義一個或多個維度。Provides a conceptual overview of cubes in analysis services, and an example of a cube that uses a star schema
提供對analysis services中多維數據集的概念性概述，並提供使用星型架構的多維數據集示例。For example, if you are loading data into a star schema, you can build a separate package to populate each dimension and the fact table
例如，如果將數據加載到星型架構中，則可以生成一個單獨的包來填充每個維度和事實數據表。Many - to - many dimension relationships expand the dimensional model beyond the classic star schema, and support complex analytics even when dimensions are not directly related to a fact table. for more information, see
多對多維度關系擴展了維度模型，使其超越了傳統的星型架構，並且即使在維度沒有直接與事實數據表相關時也可以支持復雜的分析。When you define a dimension based on a star schema, which is where all dimension attributes are derived from the same relational table, an attribute relationship is automatically defined between the key attribute and each non - key attribute of the dimension
當您基於星型架構（在該架構中，所有維度屬性都派生自同一關系表）定義維度時，會在維度的鍵屬性與每個非鍵屬性之間自動定義屬性關系。As one application, this paper analyses the operational database, then builds the supermarket ' s data warehouse logical model with the method of starschema, after that, the data is extracted from operational database. the " valuable and clean " data is loaded into the data warehouse after transformed by some tools or programming languages, then the physical model of supermarket ' s data warehouse is finished
作為一個應用實例，本文在分析超市業務數據庫的基礎上，用星型架構的方式建模，構造出一個數據倉庫的邏輯模型；然後從超市業務數據庫中抽取數據，經過轉換等處理，把「有價值的、干凈」的數據加載到數據倉庫中，完成數據倉庫的構建。Based on a 7 - axis automatic fiber placement robot developed by our selves, we built up the geometric modeling, fiber placement pattern and a simulation software with following functions : mandrel shape design, fiber placement pattern production, and machine movement simulation. the paper first introduced automatic fiber placement and outlined the importance for research on the satellite triangle conjunction of frame. the detail for the geometric modeling process was described
本文以構架式衛星結構的接頭零件為研究對象，並以高性能的自動鋪絲技術硬體專用設備? ?七軸自動鋪絲機器人為工作單元，結合復合材料結構設計的特點，開展了接頭零件的幾何建模、線型設計和模擬等研究工作，完成了simjoint模擬軟體。By using pro / engineer, three - dimensional parametric model of arm is presented for further design of arm and layout between satellite and antenna. independent variable parameters of hoop truss and relations between assemblies are obtained by analyzing the function, basic theory and construction properties of hoop truss
通過對衛星天線環形桁架的功能、結構及工作原理的分析，確定了天線環形桁架結構的獨立可變參數並建立了各裝配間的參數協調關系，在此基礎上藉助三維參數化造型技術，獲得了天線環形桁架的三維參數化實體模型。分享友人