词汇表
发表于 2025-3-27 00:31:06
Indexes and Statisticsd nonclustered indexes, which are built on B-tree (balanced-tree) structures and enhance read performance on disk-based tables. There are also indexes that support complex data types, such as XML. DBAs can also create Columnstore indexes to support data warehouse–style queries, where analysis is per
引起痛苦
发表于 2025-3-27 02:45:40
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Assignment
发表于 2025-3-27 06:59:05
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轻浮思想
发表于 2025-3-27 09:50:17
Encryptionstolen by unauthorized users, then it will be useless, unless the keys that were used to encrypt it are also obtained. This adds an additional layer of security over and above access control, but it does not replace the need for an access control implementation. Encrypting data also has the potentia
起波澜
发表于 2025-3-27 17:36:49
High Availability and Disaster Recovery Conceptsrs and their software are generally reliable, there is always the risk of a hardware failure or a software bug, each of which could bring a server down. To mitigate these risks, business-critical applications often rely on redundant hardware to provide fault tolerance. If the primary system fails, t
秘方药
发表于 2025-3-27 17:53:32
Implementing Clusteringh DBAs may not always need to build a cluster themselves, they do need to be comfortable with the technology and often need to provide their input into the process. They may also take part in troubleshooting issues discovered with the cluster.