The latter is one way to maintain the materialized view at the dw without access to the base relations by replicating all or parts of the base data at the dw 视图自维护方法通过在数据仓库中复制所有或部分源关系的数据，从而使维护数据仓库实化视图时不需要访问数据源。
In addition , the domino server will be responsible for maintaining the data integrity on any updates through both domino and db2 , with domino security features enabled 此外，在启用domino安全性功能的情况下，通过domino和db2进行任何更新时， domino服务器将负责维护数据完整性。
The priority levels of thc transactions arc considered as the basis for queuing . to keep the data consistefit and iniegrated for a real - time transaction , exclusive lock is adopted 系统采用排队策略，将事务的优先级别当作排队的基础，为维护数据的一致性和完整性，采用排它锁实现并发操作。
Fortunately , the db2 database system and db2 data warehouse center provides very comprehensive data access security service , which makes data warehouse security much easier 幸好db2数据库系统和db2 data warehouse center提供了极其广泛的数据访问安全性服务，这使得维护数据仓库的安全性变得更容易。
In this potentially highly distributed environment , you must address standard data security issues - protecting providers and users and safeguarding the overall integrity of the data 在这种可能高度分布的环境中，您必须要解决标准的数据安全性问题对数据提供者和用户提供保护，并维护数据的完整性。
Is there a mechanism to maintain data record locking in the backend database when the end - user is working on the data accessed through a jsf sdo service data objects based web client 在最终用户通过基于jsf / sdo （服务数据对象）的web客户机进行数据访问时，在后端数据库中有没有维护数据/记录锁定的机制？
To prevent unauthorized access or disclosure , to maintain data accuracy , and to ensure the appropriate use of the information , hp has in place appropriate physical and managerial procedures to safeguard the information we collect 为了防止未经授权者访问和防止泄密，同时也为了维护数据正确无误以及确保合理使用信息， hp已经采取了相应的物理和管理措施来保护我们收集的信息。
In the 4th chapter , i study some key questions involving bag scenario , distributed and parallel computing issues , data backup and restore and security control . in particular , for data restore , i use a different method with traditional log file one , which can decrease auxiliary space and improve maintenance efficiency on a large scale . in the last chapter , i implement a mini - type system using the self - maintainable algorithm 在本文的第四章，我们对自维护数据仓库的一些关键问题进行了研究，包括重复语义的处理、分布和必须处理，数据的备份和恢复、安全控制方法，特别需要说明的是，对于数据恢复，我们使用了一个与传统日志文件不同的方法，该方法可以大幅度减少辅助空间、提高维护效率。
6 . in software designing , the author describes the plan of optimizing the structure of software with object - oriented technology and the designing ideas and details of the plan , and discusses how to keep data security by using forepart program 采用了面向对象技术优化“陕西航空硬质合金工具公司小型erp / crm系统”的软件结构，提供了其设计思想和具体的技术细节，给出了“陕西航空硬质合金工具公司小型egn crm系统”如何通过进一步利用前端应用程序来维护数据的安全性。
Then we make this node open to the internet users in order to let any unit and individual can access our metadata through www explorer . the success of this pilot system profits that the research and implementation introduced in this paper provides a feasible way for the data producer to manage and maintain data effectively , for the end user to find and access the data timely 系统的研制成功表明，本文的研究路线可以促进数据生产者更有效地管理和维护数据，用户能够更快、更全面地发现、访问、获取和使用现势性强、精度高的数据，从而实现真正意义上的数据共享。
