Vertical scaling is typically employed for the database tier.
纵向扩展通常用于数据库层。
Listing 3 shows XML fragment for a database tier with two server groups.
清单3给出包含两个服务器组的数据库层的xml片段。
New components could reuse database tier functionalities where possible.
在可能的情况下，新组件可以重用数据库层的功能。
The database tier of current applications is known to be very well structured and efficient.
已知当前应用程序的数据库层结构非常良好和高效。
There should not be any affinity between the web tier, application tier and the database tier.
Web层，应用层和数据库层之间不应该有任何交叉。
Configure the database tier and the application tier for production. Migrate the database tier.
为生产运行而配置数据库层和应用程序层。
Each product was divided into tiers: a database tier, an application tier, and a Web server tier.
每个产品都划分为多个层：数据库层、应用程序层和Web服务器层。
As it turns out, Seam can also help take a load off of the limited resources of the database tier.
结果，Seam还能帮助降低数据库层有限资源的负载。
For example, a mysql-cluster-based database tier would be comprised of two server groups, an NDBD group and a manager group.
例如，基于mysql集群的数据库层可能包含两个服务器组，一个ndbd组和一个manager组。
For example, a mysql-cluster-based database tier would be comprised of two server groups, an NDBD group and a manager group.
例如，基于mysql集群的数据库层可能包含两个服务器组，一个ndbd组和一个manager组。
应用推荐