database relational 中文意思是什麼
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Third, this dissertation analyzes the complicacy of result size estimation problem for xml structure based query optimization compared to its counterpart in traditionally relational database, and proposes a full - featured result size estimation algorithm for xml query, sxm. for simple path expression query, this dissertation proposes a dynamic synopsis model for xml data based on the concept of f - stable and b - stable, xmap. for complicated path expression query, this dissertation adopts an improved bifocal sampling method for result size estimation
第三，分析了xml結構化查詢優化中的查詢代價估計問題與傳統關系型數據庫中的查詢代價估計問題的區別，提出了一套完整的xml結構化查詢代價估計體系sxm ，包括對簡單路徑表達進行查詢代價估計的動態xml數據統計模型xmap ，對復雜路徑表達進行查詢代價估計的雙焦點例舉法，以及對值匹配條件進行查詢代價估計的基於小波的多維直方圖方法，並能將多種查詢表達的查詢代價估計結果結合在一起，以給出一個完整的xpath查詢的代價估計。 -
In addition, because there is internal relationship between the formalism of relational database, " relational algebra ", and the clausal logic used by ilp, ilp methods can directly deal with mining task involved in multiple tables of relational database
此外，由於關系數據庫的形式描述? 「關系代數」與ilp的子句邏輯有著內在的關聯性， ilp技術可被直接用於涉及關系數據庫中多個關系（表）的數據挖掘任務。 -
Translate the cws ( or other clinical database ) relational database into an xml stream and re - constitute the data in a better normalized data model
將cws （或者其他的臨床資料庫）相關資料庫轉化成一個xml流，並且重建一個較好的規?化資料模型上的數據。 -
The second is the integration of domino and relational database system. the e - government system of chongqing education commission adopt the odbc solution, of which the paper has elaborated the application in the intergration of notelet application. the third is the security strategy control of e - government. based on the security strategy control of domino, the author putes forward five approach of security control strategy to assure the security of the e - government system of chongqing education commission
二是domino與關系數據庫的集成，在眾多的domino與關系數據庫介面中，市教委電子政務系統主要採用odbc的解決方案，文中以電子政務系統中集成簡訊應用為例，詳細介紹了該方案的應用。三是電子政務安全策略控制，依託domino自身的安全體系，作者綜合了五個方面的安全控制策略來保證重慶市教委電子政務系統的安全。 -
Involuntarily, questions of these engineering datas " management appear, datas " persistance only depending relational model and rdbms is greatly insufficient, so this paper carefully studies object - relational mapping based on rdbms based on the analyse of home & overseas actualities, correlative theories and realizing methods of object - relational mapping, we find opl based on rdbms is the most suitable for object relatinoal mapping of clera. based on the engineering application analyse of opl in clera, function requirements, database modes, interface criterions and functions, running modes of opl have being detailedly described. with the framework of microsoft dna, a kind of realizing method of opl based on com / dcom / activex component technology has being brought forward, and this paper describes realizing keys from base tables " definition, object id and class hx class and inheritance of class, object storage, parallel control and affair, object query, object nesting, relations between objects, support of complex data types, right control of object and buffer management of object
本文在分析對象?關系映射技術的國內外現狀、相關理論及實現方法的基礎上，研究發現基於rdbms的opl是目前最適合clera的對象?關系映射方法；在clera的opl應用分析的基礎上，詳細描述了opl的功能要求、數據庫模式、介面規范與功能、運行方式等內容；結合microsoftdna開發框架，提出了一種基於com dcom activex組件技術的opl實現思路，並從基本表定義、對象標識與類標識、類與類繼承、對象存儲、並發控制與事務、對象查詢、對象嵌套、對象間聯系、復雜數據類型的支持、對象級權限控制及對象緩沖管理等幾方面概述了實現要點。 -
Abstract : the data redundant in relational database is caused by the reduplication of the table, attribute, record, or attribute value
文摘:關系數據庫的數據冗餘形成的原因有表的重復、屬性的重復、元組的重復、屬性值的重復。 -
Data structure in object - oriented relational database
對象關系數據庫中的數據結構 -
The technology of database develops from hiberarchy database, retiform database to relational database, even oo database, that has become to the base of information system. since 90 ' s, as a kind of language of network programming, java makes best use of network resources and it ' s portable, cross - platform, reusable and extendable
數據庫技術經歷了從層次數據庫、網狀數據庫到關系數據庫以及面向對象數據庫的發展，已成為計算機信息系統中的重要基礎和支柱，並在傳統的商業和事務處理等領域內趨于成熟。 -
As the rdbms ( relational database system ) can hardly adapt the requirement of non - traditional application, such as incompetence of model representation, low system with a combination of 00 language, sematic, model, complex object and database system. it absorts the merit of the oodbms and the rdbms, it inherit the mature technology of the rdbms, on the other hand, it import the technology of the 00, so it can boost up the ability of handle complex object, etc
它針對關系數據庫系統（ rdbms ）不能適應非傳統應用的要求，如：模型表達能力有限，系統效率低、事務模型太簡單等，結合面向對象語言、語義模型、復雜對象模型和數據庫的幾個方面的研究而形成的一個高度數據集成化系統。 -
Our vision is to manager 3d spatial objects by relational database management system and to manipulate the 0 - dimensional object, 1 - dimensional, 2 - dimensional, and 3 - dimensional in unifiable manner. we employ the mature technology of object - relational database in existence to solve some complex problems of spatial operations efficiently
研究中，我們把三維空間中的0維對象、 1維對象、 2維對象和3維對象納入了統一的處理框架，為利用現有的數據庫技術處理復雜的地理數據探索出一條可行的途徑。 -
We introduce detailly the its design ideal, merit, purpose and sql language and so on, then we discuss the problem of the design and implement of the v - ordbms. compared with other products, now, v - ordbms, which we are designing, is based on the relational database system for windows os, it extends the abstract data type, such as array, set, structure etc, we solve the store and all sorts of sql operation for these extended data type. otherwise, in v - ordbms, we provide the solution of how to realize the store of class, inherit, and the mapping of the relation among classes. etc. it provides the visual environment for using
對比國外的postgresql ， gemstone ， 02等產品，目前我們設計的v - ordbms原型系統是基於windowsos的平臺，以關系數據庫為基礎，在支持傳統數據類型的基礎上擴展了抽象數據類型adt （ abstractdatatype ） ，例如數組、集合、結構等，解決了它們的存儲以及相應的各種sql操作，能夠支持復雜對象，所以它的數據類型豐富。 -
The purchase order is stored as a clob in the relational database as opposed to being shredded
采購訂單（ po ）在關系數據庫中存儲為clob （而不分割） 。 -
In the 1970s, the rigorous mathematical work of e. f. codd and others created the now - ubiquitous relational database model
70年代， e . f . codd與其他一些人通過嚴格的數學工作創造了現在無處不在的關系數據庫模型。 -
You can also save records from a relational database into olap cube files, making it possible to combine your excel data with data sources from other databases
也可將關系數據庫中的記錄保存到olap多維數據集文件，從而使excel數據與其它數據庫數據源的組合成為可能。 -
In recent year, with the development of relational database, the digital watermark technology for databases, which embeds watermark in relational database, has become popular
近年來，隨著關系數據庫廣泛使用，又興起了在關系數據庫中嵌入水印信息的數據庫水印技術。 -
This paper introduces some ways to implement expert database systems in relational database and suggests some ways to think about expert database systems in flight record data analysis
文中介紹了基於關聯資料庫的專家資料庫系統的實現方法，給出了在飛行記錄資料分析中應用專家資料庫系統的思路。 -
The content of this paper mainly includes investigation content and methods of electronic multi - media military geographic documentations, the data model of multi - media database ( the object - oriented multi - media data model, the extended relational data model, the hyper - text multi - media model ), the general and detailed design for multi - media database and the connecting technique between foreground application and background database, which includes odbc, mfc odbc, dao, ole db and ado
本文的主要內容包括多媒體電子兵要地誌的研究內容和方法；多媒體數據庫數據模型（面向對象的多媒體數據模型、擴充的關系數據模型、超文本的多媒體數據模型和融合型數據模型） ；多媒體數據庫的總體設計和詳細設計；前臺應用程序與后臺數據庫的多種連接技術，包括odbc 、 mfcodbc 、 dao 、 oledb和ado技術。 -
The system addresses one way to integrate the rolap technology and traditional report form function, and the way can manage the searches of the relational database to realize multidimensional data analysis and to deal with the execution of report form
系統將rolap技術與傳統的報表製作功能集成起來，能夠從對關系型數據庫的檢索處理中，實現多維數據分析和報表製作處理。 -
The article addresses one way to integrate the rolap technology and traditional report form function, and the way can manage the searches of the relational database to realize multidimensional data analysis and to deal with the execution of report form continuously
本文將rolap技術與傳統的報表製作功能集成起來，能夠從對關系型數據庫的檢索處理中，連續實現多維數據分析和報表製作處理。 -
An erp system differs from the typical mrpii system in technical requirements such as graphical user interface, relational database, use of fourth - generation language, and computer - aided software engineering tools in development, client / server architecture, and open - system portability
一個erp系統和典型的mrp系統的區別在技術上，例如，圖形用戶介面，關系數據庫，在開發中使用第4代語言和計算機輔助軟體工程工具，客戶機/服務器體系結構和開放系統的可移植性。
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