| 1. | Logical database design
逻辑数据库设计 |
| 2. | A poor logical database design can hinder the performance of the whole system
逻辑数据库设计不好，会影响整个系统的性能。 |
| 3. | Sometimes , the logical database design is already fixed and total redesign is not realistic
有时，逻辑数据库设计已经固定，全部进行重新设计是不现实的。 |
| 4. | A good logical database design can lay the foundation for optimal database and application performance
设计好逻辑数据库，可以为优化数据库和应用程序性能打下基础。 |
| 5. | Normalizing a logical database design involves using formal methods to separate the data into multiple , related tables
规范化逻辑数据库设计包括使用正规的方法来将数据分为多个相关的表。 |
| 6. | After normalizing your data model as far as you have intended during the logical database design process , then include some degree of de - normalization as one of the potential performance tuning options
在逻辑数据库设计过程中，您可以毫无保留地规范化数据模型，然后再加入一定程度的反规范化，作为潜在的性能调优的一种选择。 |
| 7. | The thesis also analyzes how to optimize the performance of the whole distance education supporting platform based on sql server7 . 0 database , and emphasizes on the four aspects of logical database design , index usability , query structure and procedure objects . it also discusses the extension of system functions from the point of view of database design in order to realize the distance education quality appraisal and tracking in the future
对基于sqlserver7 . 0数据库的整个远程教育支撑平台系统的性能优化进行分析，着重从逻辑数据库设计、索引的可用性、查询结构和过程对象的使用四个方面进行论述，并从数据库设计角度讨论了对系统进行功能扩展，以实现未来对远程教育质量评价和教学质量跟踪。 |
