PDO的易用性使之在直接处理数据库时很自然地成为了首选方法,就因为这一原因,SDO提供的关系型DAS实现也选择了此技术。
The ease of use of PDO makes it a natural choice when working directly with databases, and for this very reason is the technology chosen for the Relational DAS implementation provided with SDO.
例如,如果数据库不是任务关键型和24x7型的,那么停机上一段时间和丢失一些数据可能是可以接受的,对于媒介错误,重新键入数据也可能是一种可以接受的方法。
For instance, if the database is not mission-critical and 24x7, some downtime and loss of data may be acceptable, and re-keying of data may be an acceptable option should media failure occurs.
在设计层次型数据库时,一个较好的设计方法是分二步走:首先利用实体联系方法抽象出现实世界的实体联系模型,然后将实体联系模型变换到具体DBMS 所支持的层次型模型。
A good algorithm to design such a hierarchical database consists of two steps, first, to describe real world in E-R model and then, convert it to the model supported by the DBMS.
对数值型数据保持顺序加密方法进行了分析,在此基础上提出了一种在关系数据库中针对字符数据的保序加密方法。
In this paper the order preserving encryption for numeric data is analyzed. An order preserving encryption method for character data in relational databases is proposed.
针对关系型数据库在联机分析方面的不足,利用数据仓库的相关技术和开发方法,提出了决策支持系统开发的一种新途径。
A new approach to decision support system is put forward based on related techniques and development methods of data warehouse for the shortage of relational database in the aspect of OLAP.
本文介绍了树型结构数据在关系数据库中存储的思想和一种在网页中显示树型数据结构的方法。
A thinking about data of tree structure how to stored in relational database and a method of how about these data is displayed on web is discussed in this paper.
论文在自主开发的空间数据库VISTA的基础上针对特定的对象-关系型数据结构,提出了相应的访问控制方法。
This paper describes the access control method for the specific relational-object data structure on the base of the self-developed spatial database, VISTA.
并在参考模型的指导下,结合保险业务特性,提出了一种以统一视角进行保险业操作型源系统和分析型系统数据库的设计方法。
According to this reference model, as well as the analysis of the insurance business, the author addresses a new method for designing the operational system and the analytical system in insurance.
文章介绍了用TRS建立全文型、多媒体型数据库的方法。
Article have introduced the method that use TRS to establish the multi-media and full text database.
大量的工程应用都涉及到数据库的设计方法,同一类型的工程对象(也称为实体)往往具有不同的属性。
The application of massive projects all involves the design method of database, the congeneric project objects (called entity) often to have the different attributes.
给出了基于关系型数据库的单层批次清单的数据库设计方法。
Has given based on the relations database single-layer raid of detailed list database design method.
本文采用了基于规则的知识表示方法,并采用了关系型数据库建立本系统的知识库,知识库具有添加、删除等功能,实现规则的增加及重复规则的删除。
The structure of knowledge base is build by the database of relational data model. In order to add rules and delete reduplicate rules, knowledge base has the function of addition, deletion and so on.
方法利用聚合酶链反应(PCR)产物直接测序,对10例血液标本进行了HLA-DPB1、DRB外显子2的序列分析,并将测定结果与基因型核酸序列数据库进行比较。
Methods Sequences of HLA-DPB1, DRB exon2 of 10 samples were analysed by direct sequencing of PCR products. The results of sequencing were compared with their corresponding sequence data.
方法利用聚合酶链反应(PCR)产物直接测序,对10例血液标本进行了HLA-DPB1、DRB外显子2的序列分析,并将测定结果与基因型核酸序列数据库进行比较。
Methods Sequences of HLA-DPB1, DRB exon2 of 10 samples were analysed by direct sequencing of PCR products. The results of sequencing were compared with their corresponding sequence data.
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