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Techniques for update handling in the enhanced client-server DBMS

机译:增强的客户端-服务器DBMS中的更新处理技术

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The Client-Server computing paradigm has significantly influenced the way modern Database Management Systems are designed and built. In such systems, clients maintain data pages in their main-memory caches, originating from the server's database. The Enhanced Client-Server architecture takes advantage of all the available client resources, including their long-term memory. Clients can cache server data into their own disk units if these data are part of their operational spaces. However, when updates occur at the server, a number of clients may need to not only be notified about these changes, but also obtain portions of the updates as well. In this paper, we examine the problem of managing server imposed updates that affect data cached on client disk managers. We propose a number of server update propagation techniques in the context of the Enhanced Client-Server DBMS architecture, and examine the performance of these strategies through detailed simulation experiments. In addition, we study how the various settings of the network affect the performance of these policies.
机译:客户端-服务器计算范例极大地影响了现代数据库管理系统的设计和构建方式。在这样的系统中,客户端在其主内存缓存中维护数据页,这些数据页源自服务器的数据库。增强的客户端-服务器体系结构利用了所有可用的客户端资源,包括它们的长期内存。如果这些数据是其操作空间的一部分,则客户端可以将服务器数据缓存到其自己的磁盘单元中。但是,当服务器上发生更新时,可能不仅需要通知许多客户端有关这些更改的信息,而且还需要获取部分更新信息。在本文中,我们研究了管理服务器实施的更新的问题,这些更新影响了缓存在客户端磁盘管理器上的数据。我们在增强的客户端-服务器DBMS架构的背景下提出了许多服务器更新传播技术,并通过详细的模拟实验检查了这些策略的性能。此外,我们研究网络的各种设置如何影响这些策略的性能。

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