relational database query
英 [rɪˈleɪʃənl ˈdeɪtəbeɪs ˈkwɪəri]
美 [rɪˈleɪʃənl ˈdeɪtəbeɪs ˈkwɪri]
【计】关系数据库询问
双语例句
- Mongo collections, much like relational database tables, need to be properly indexed to ensure reasonable query performance.
Mongo集合（非常像关系数据库表）需要正确进行索引以便确保合理的查询性能。 - Work with a relational database: Structured Query Language
处理关系数据库：结构化查询语言 - For any row, you can access only one member of one column family at a time ( unlike a relational database, where one query can access cells from multiple columns in a row).
对于任意行，一次只能访问一个列族的一个成员（这与关系数据库不同，在关系数据库中，一个查询可以访问来自一个行中的多个列的单元）。 - Structured Query Language ( SQL): In IBM System and products, a complete full-function, relational database management system with integrated query and report writing facilities.
结构化的查询语言是在IBM系统与产品中，一种完整的，功能齐全的关系型数据库管理系统，其中带有集成查询设施和种种报告书设施。 - The derived relational algebra operators are widely used in the relational database query languages.
关系代数的派生算子在关系数据库查询语言中得到了广泛应用。 - Research on Constraint Relational Model of Non-Classical Relational Database in Query Optimization
非经典关系数据库中约束关系模型在查询优化中的应用 - However, semistructured speciality of XML datas and query way base on the path expression are differ from the relational database query, so it is limited that function that the relational database system managing XML datas.
然而由于XML数据的半结构化特性以及XML数据所特有的路径表达的查询方式不同于现有的关系数据库查询，使得关系数据库系统对XML数据的管理功能受到极大限制。 - The Research and Implementation of the Full Relational Spatial Database Query Language
全关系空间数据库查询语言的研究和实现 - It is difficult to represent hierarchical models by relational database management system, and standard SQL language can not satisfy the complicated hierarchical query needs. But there are many practical application systems that show more hierarchical features both in structures and query needs.
关系型数据库管理系统不适合表达层次模型问题，标准的SQL语言无法满足复杂的层次查询要求，但有许多实际应用系统，其结构和查询要求都呈现很强的层次特征。 - If XML files are directly saved in the relational database, though the structure of relational table is canonical and the speed of query is something raised, the flexible property of XML files structure may be lost.
把XML文档直接存放在关系数据库中，虽然关系表的结构很规范，数据的查询速度有所提高，但XML文档本身的结构灵活性就有可能丢失了。 - As most of the attributes data of spatial objects are stored in relational database, the paper researches the optimization of the attributive information query, and proposes the principles for optimization of the database design to improve the efficiency of the application's query.
由于空间对象的许多属性数据都存储在关系数据库中，因此针对空间属性信息查询优化问题进行了研究，给出了属性数据库优化设计的原则，以提高应用程序的查询效率。 - At present, the information and data on many large web are structured or semi-structured, which can be abstracted and processed similarly as relational database or objected-oriented database to raise the operation efficiency, especially the query efficiency.
当前许多大的Web站点的信息和数据呈现结构化或半结构化的特点，因而可经抽象，作为类似关系数据库或面向对象数据库并加以处理，以提高操作效率，特别是在此基础上的查询操作。 - The great success of relational database and SQL mainly benefits from the development of query optimization technology.
关系数据库系统和非过程化的SQL语言能够取得巨大成功，主要得益于查询优化技术的发展。 - First of all, this paper investigates research status of fuzzy relational database and properties of vague set, and then puts forward a generalized fuzzy relational data model on vague set ( VGFRDM) and a fuzzy database structured query language on vague set ( VFSQL).
本文首先探讨了模糊关系数据库的研究现状和Vague集的性质，然后提出了基于Vague集的广义模糊关系数据模型VGFRDM和基于Vague集的模糊数据库查询语言VFSQL。 - As join operation to relational database, structural join order selection is at the heart of query optimization in an XML database.
和关系数据库中的连接运算一样，结构连接顺序的选择是XML数据库查询优化的核心。 - Under the background of Alot Material under Distributed computing environment, this paper emphasizes to study three key problems: the integration of relational database, the design of database query optimization and alot material.
本文以分布环境下物资分配过程为现实背景，着重研究了其中的三个主要问题：关系数据库的集成、数据库的查询优化设计和物资分配问题。 - In the paper, we firstly introduce database technologies into ontology storing, put farther forward a directly storing method from ontology to relational database, this method makes for advancing efficiency for ontology storing and query.
本文首先将数据库技术引入到本体存储中，进而提出了本体向关系数据库直接存储的方法，该方法可以提高本体存储和查询效率； - Medium Relational Database Query Languages
中介关系数据库查询语言 - With respect to the characters of ARTs-EDB and referred to traditional query process mechanism of relational database system, the architecture of the query process mechanism in ARTs-EDB are designed and it contains the main modules in query process and interfaces to other subsystems.
针对ARTs-EDB的特点，并参照传统的关系数据库的查询处理机制，设计了ARTs-EDB的查询处理机制的体系结构，该体系结构给出了查询处理的主要模块以及与其它子系统的接口。 - It expounds the distributed design of cadastral database with spatial distribution characteristics. The transparent distribution, the integration of the spatial database and relational database, distributed query processing, data update in multiple places, data consistency are presented in detail.
阐述了具有空间分布特征的地籍数据库的分布式设计，详细介绍了其中的数据分布与分布透明、空间数据库与非空间的关系数据库集成、分布式查询处理及数据一致等内容。 - Distributed relational database query optimisation is a combinatorial optimisation problem.
分布式关系数据库最优化查询是一个组合最优化问题。 - It is very meaningful to store the XML document into relational database because of index 、 storage and query of relational database are well-developed.
关系数据库具有成熟的索引、存储、查询技术，将XML数据存储到关系数据库中将极具意义。 - Then we can construct XML document to simulate a relational database, which turns the database query into XML queries.
我们可以构造XML文档来模拟关系数据库，从而将数据库的查询转化为对XML的查询。 - If the content of XML document could be stored into relational database, there would be mature techniques of relational database to be utilized. Thus, storage and query of XML in relational database has become a hot topic.
如果能将XML文档内容存储在关系数据库，便可以充分利用成熟的关系数据库技术，所以XML在关系数据库中的存储和查询一直是研究的热点。 - Based on the relational database query technique is stored and storage and query XML ways in the most mature a data management technology.
基于关系数据库的存储和查询技术是目前存储和查询XML的各种方式中最成熟的一种数据管理技术。 - The Civil Aviation in major information systems currently accumulated a lot of historical operating data, but many remain in traditional relational database approach to the statistical reports, etc., only for data query, statistical and other functions.
虽然民航目前在各大信息系统积累了大量的历史运行数据，但许多系统仍然以传统的关系数据库中的统计报表等方式进行，只是实现数据的查询、统计等功能。 - Finally, the relational database query, using a little improvement to establish index table way triad database design optimization.
最后，对关系数据库查询做出了一点改进，采用建立索引表的方式进行三元组数据库的优化处理。 - Finally, because data is stored to a relational database, we give SQL statements which change from the query model.
最后，由于数据是存储到关系数据库里，因此本文还给出把查询模式转化为数据库支持的SQL语句。 - Storing log information into relational database can greatly improve the query efficiency, and save storage space.
将日志信息纳入关系数据库中进行管理可以大大的提高查询效率，并且节省存储空间，从而有效管理系统产生的日志信息。 - Traditional relational database and the precise query base on it can not meet the requirement of applications; content-based retrieval of multi-media data is making progress in research.
传统的关系数据库和建立在其上的精确数据查询已经无法满足应用的要求，基于内容的多媒体信息检索技术不断取得研究进展。