| 1. | The . ldb file is created at run time
在运行时创建. ldb文件。 |
| 2. | Root system characteristics of tamarix ramosissima ldb . on terrace embankments in two types of stand conditions
两种立地条件梯田埂坎红柳根系特征研究 |
| 3. | The results showed that the drought resistant capability decreased in order of tamarix ramosissima ldb . , platycladus orientalis and sympegma regelii
结果表明， 3树种抗旱性大小顺序依次为：红柳侧柏合头草。 |
| 4. | Because access must create an . ldb file to support locking , the user account must have write permissions for the folder that contains the . mdb file
由于access必须创建一个. ldb文件以支持锁定，因此用户帐户必须对包含. mdb文件的文件夹具备写权限。 |
| 5. | Write permission is required because access creates an additional file that has the extension . ldb in which it maintains information about database locks for concurrent users
需要写入权限的原因是access还创建一个具有扩展名. ldb的文件，其中包含关于并发用户数据库锁的信息。 |
| 6. | In multidatabase , access to global view will be decomposed to several sub - operations to several ldb , and perhaps also need data schema translation and query processing
在多库系统中，对全局视图的存取操作要分解为针对多个ldb的子操作，可能还要对数据模式及查询语言进行转换。 |
| 7. | Write permission is required because access creates an additional file with the extension . ldb in which it maintains information about database locks for concurrent users
要求写权限是因为access将创建另一个扩展名为. ldb的文件，并在该文件中维护有关并发用户的数据库锁定的信息。 |
| 8. | If each accessing to global view must be translated into accessing to ldb , the cost will be very expensive . so there are materialized views in most multidatabase
如果每一次对全局视图的访问都要转换为对底层数据库的访问，代价是很昂贵的，所以多库系统中一般都保持一个物理的全局视图。 |
| 9. | Multidatabase can shield the user and application from the difference of local database , and provide global transaction management , and maintain consistency of data within the local database . multidatabase technology has been accepted in the world
多库系统为用户和应用程序屏蔽了底层数据库操作环境的差异，提供全局事务处理能力，并维护各结点上ldb的数据一致性，从较深的层次解决了异构数据库互操作问题。 |
| 10. | Once the view is created by outjoin , those existing algorithms may fail in view maintenance . this paper introduce a new view maintenance algorithm , which can handle view involving outjoin , regular join and data inconsistency . moreover , our maintenance mechanism minimizes the number of the queries that need to be sent to the local database systems for view maintenance , which is an efficient way to make the multidatabase system more efficient
针对传统的视图维护算法在有外连接或数据不一致的情况下会出现错误的问题，本文提出了一种新的视图维护算法： vmdt算法，该算法不仅解决了外连接及数据不一致问题，而且最大限度地减少了国防科学技术大学研究生院学位论文mdbs与ldb之间的通信量，解决了嵌套异常问题。 |
