这种逻辑数据模型,使得使用第四种方法中描述的块载入工具直接载入数据库变得不现实起来。
This logic data model makes it impractical to directly load database tables by using bulk load tools that are described in the fourth method.
处理器内核随后选出未压缩的、过滤后的数据块,执行基本的数据库操作,如排序、联接和聚合。
A processor core then picks up the uncompressed, filtered data block and performs fundamental database operations such as sorts, joins, and aggregations.
数据库切分是一个固有的关系流程,可以通过一些逻辑数据块将一个表的行分为不同的小组。
Database partitioning is an inherently relational process of dividing a table's rows by some logical piece of data into smaller groups.
使用与关系数据库一起提供的块载入工具来初始化数据库表。
Use the bulk load tools that are provided with relational databases to initialize database tables.
内存中数据库系统一个最值得注意的不同之处在于没有大数据块结构。
One of the most noticeable differences of an in-memory database system is the absence of large data block structures.
如果无法将排序的数据整个放入排序堆中(排序堆是每次执行排序时分配的一块内存),它就会溢出到该数据库所有的临时表中。
If the sorted data cannot fit entirely into the sort heap, which is a block of memory that is allocated each time a sort is performed, it overflows into a temporary table owned by the database.
RMAN将备份已经在数据库中使用的所有数据块。
RMAN will backup all data blocks that have ever been in use in database.
收集到的关于空余块的数据被存储在一个名为free_chunks的数据库表中,该表的格式如下。
The collected data about the free chunks is stored in a database table named free_chunks that has the following format.
如图1所示,一个Web站点常常会被分成几个互相连接的块,比如保存客户有用数据的数据库以及站点的配置信息。
As Figure 1 shows, a Web site is often broken up into several interconnecting pieces, such as a database holding your customer's valuable data and your site's configuration information.
在这场景中,内容存储库包括两个部分:一个文件系统,单独的文章就是作为片段在此部署的,以及一个数据库,在此部署每一个内容块的元数据。
In this scenario the content repository consists of two parts: a file system, where individual articles are deployed as fragments, and a database, where metadata for each piece of content is deployed.
一块拼图是数据建模,另一块是数据库更改。
One puzzle piece is data modeling and another is database change.
顾名思义,内存中数据库完全驻留在主存中,而不是磁盘上,这使得数据访问比传统的基于磁盘的数据块要快一个数量级。
As the name implies, an in-memory database resides entirely in main memory rather than on disk, making data access an order of magnitude faster than with conventional, disk-based databases.
数据库缓冲池通常是数据库共享内存中最大的一块内存。
The database buffer pool(s) area is normally the largest component of the database shared memory.
应该经常这样做:在数据从数据库出来的过程中转换数据时,将较小的数据块放到网络上。
And you'll often be doing exactly that: Putting smaller chunks of data on the network, when you transform the data on its way out of the database.
牢记数据库的构建块及其继承关系:数据库由表组成,表由字段组成。
Always keep in mind the building blocks of databases and their hierarchical relationships: databases consist of tables, which consist of fields.
紧凑的数据表可以针对基于行的数据库做存储块优化,让SQL执行得更好。
Compact tables can optimize storage blocks for row-based databases and accordingly make SQL perform better.
每个内容块同样还有一组TeamSite部署到数据库中的元数据。
Each piece of content also has a set of metadata that TeamSite deploys to a database.
catch块中,包括清单3所示的数据库元数据操作。
Catch block, including the database metadata operations shown in Listing 3.
根据为每个加载及其数据块定义的优先级,使用管道将这些加载或数据库之一摄入IBMInfoSphereIdentityInsight中。
Based on the priorities defined for each load and its chunks, one of them is taken for the pipelines for ingestion into IBM InfoSphere Identity Insight.
数据访问应用程序块。此应用程序块允许开发人员在其应用程序中集成标准的数据库功能。
Data Access application block. Developers can use this application block to incorporate standard database functionality in their applications.
一个数据块对应于一个特定数量字节的磁盘上的物理数据库空间。
One data block corresponds to a specific number of bytes of physical database space on disk.
对于透明的支持多种类型的数据库数据访问应用块提供了一个可以扩展的框架。
The data Access Application Block provides an extensible framework for transparently supporting multiple types of relational databases.
当使用预定义的模板时,这个列表将不能使用,因为创建数据库的时候会用默认的8k来设置数据库块的大小。
While using predefined templates, this list is not enabled because the database will be created with the default block size of 8 KB.
数据块是构成数据库的最小数据单位。
A data block is the smallest unit of data used by a database.
应用可以使用这个数据访问块方便地使用不同的数据库。
Applications that use the application block are portable across different database systems.
书上说如果数据库对象存储超过这个指定的大小,这个数据文件的大小就会降到这个数据文件最后一个对象的最后一个块的大小?
If there are database objects stored above the specified size, then the data file size is decreased only to the last block of the last objects in the data file.
书上说如果数据库对象存储超过这个指定的大小,这个数据文件的大小就会降到这个数据文件最后一个对象的最后一个块的大小?
If there are database objects stored above the specified size, then the data file size is decreased only to the last block of the last objects in the data file.
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