It provides a db2 relational model for the remote data and assists the federated engine in query processing by sending sub - queries to the remote data source 它提供了遠(yuǎn)程數(shù)據(jù)的db2關(guān)系模型,并通過向遠(yuǎn)程數(shù)據(jù)源發(fā)送子查詢以幫助聯(lián)邦引擎實(shí)現(xiàn)查詢處理。
Client / server structure system is defined as structure of this system this paper analyzed system structure according to the methodology of object - oriented based relational model 在關(guān)系模型的基礎(chǔ)上部分引入了面向?qū)ο蟮母拍?,按照第三范式完成?shù)據(jù)庫的邏輯結(jié)構(gòu)設(shè)計(jì)。
The database theory starts for 1960s , and come through hierarchical model database system , network model database system , and relational model database system 數(shù)據(jù)庫技術(shù)始于20世紀(jì)60年代,幾十年來,數(shù)據(jù)庫技術(shù)的發(fā)展經(jīng)歷了由層次數(shù)據(jù)庫系統(tǒng)、網(wǎng)狀數(shù)據(jù)庫系統(tǒng),到關(guān)系數(shù)據(jù)庫系統(tǒng)。
Rule 4 : dynamic on - line catalog based on the relational model a relational database must provide access to its structure through the same tools that are used to access the data 原則4 :動態(tài)在線編目以關(guān)系模型a為基礎(chǔ),關(guān)系型數(shù)據(jù)庫必須提供用訪問數(shù)據(jù)相同的工具訪問其結(jié)構(gòu)的功能。
The construction of relational model based workflow management system create a kind of new development mode of information system , it is a good reference to likewise system 基于關(guān)系模型的工作流管理系統(tǒng)的實(shí)現(xiàn)開創(chuàng)了一種新的信息系統(tǒng)開發(fā)模式,對開發(fā)類似系統(tǒng)具有一定的參考價(jià)值。
We re not doing anything radical here ; our data model is essentially the same as the relational model , but with annoying details as well as powerful features removed 我們這里不是在作任何實(shí)質(zhì)性的事情;我們的數(shù)據(jù)模型本質(zhì)上和關(guān)系型模型是一樣的,但去掉了煩人的細(xì)節(jié)(同時(shí)去掉了強(qiáng)大的功能) 。
With the development of the object - oriented technology , ordbms which based on the relational model , has been one of the most ubiquitous and promising research and application fields in recent years 而在近幾年內(nèi)基于成熟的關(guān)系模型上的對象-關(guān)系數(shù)據(jù)庫系統(tǒng)( ordbms )正在成為一個被廣泛接受且非常具有前景的研究以及應(yīng)用的領(lǐng)域。
These models can be extended relational model , object oriented model and other special data models . these models show high ability of dada modeling on complex data hi engineering application area 這些數(shù)據(jù)模型或?qū)鹘y(tǒng)的關(guān)系模型進(jìn)行擴(kuò)展,或采用面向?qū)ο竽P鸵约捌渌黝悓S玫臄?shù)據(jù)模型,在工程應(yīng)用領(lǐng)域中顯示出強(qiáng)大的威力。
If you chose to address this problem using a binding framework like jibx , you would most likely have to create some intermediary object model to get from your relational model to your final destination of an xml model 如果選擇使用jibx這樣的綁定框架來解決這個問題,則很可能需要創(chuàng)建一些中間對象模型,以從關(guān)系模型到達(dá)最終的xml模型。
First , the dissertation introduces the mechanism and a logical framework of the service oriented spatial data integration , then presents the data source schema and integrated schema based on relational model 首先,論文構(gòu)造了面向服務(wù)的分布式空間數(shù)據(jù)集成機(jī)制,建立了一個集成邏輯框架,提出了空間數(shù)據(jù)服務(wù)的數(shù)據(jù)源模式和集成模式構(gòu)造方法。
The relational model for database management is a database model based on first-order predicate logic, first formulated and proposed in 1969 by Edgar F. Codd.