DMS
abbr. 数据库管理系统(Database Management System)
2025-09-07 00:14 浏览次数 10
abbr. 数据库管理系统(Database Management System)
DMS DiskMonitorSystem磁盘监控系统
DMS Footprinting硫酸二甲酯保护实验
DMS DigitalMultiplexSwitch数字式多路复用转换
DMS FW资深嵌入式开发工程师
DMS DynamicManagementSystem动态管理系统
DMS Lite精简版桌面管理服务
TRS DMSTRS数据库管理系统
DMS GUR银赫
ryn dms摇滚王子布莱恩亚当斯
Long table Spaces: long table Spaces are used to store long or LOB table columns and must reside in DMS table Spaces.
长表空间:长表空间用于存储长型或lob表列,它们必须驻留在dms表空间中。
These automatic storage table Spaces actually use the DMS FILE infrastructure and have auto-resize turned on by default.
这些自动存储表空间实际上使用DMSFILE基础设施,并默认自动调整大小。
Placing DB2 data on raw devices is discouraged now as DB2 creates DMS table Spaces without file system caching by default.
现在鼓励将DB 2数据放在原始设备上,因为在默认情况下,DB 2会在没有文件系统缓存时创建dms表空间。
So, for this example we「ve designed our own DMS interface that provides two methods, as shown in Listing 1.
因此我们为这个例子设计了自己的DMS接口,它包含两个方法,如清单1所示。
In Part 2, we will focus on specific coding techniques and best practices that you can use to optimize the performance of your JDBC DMS and metadata code.
在第2部分中,我们将重点讨论具体编码技术和可以用来优化JDBCDMS和元数据代码性能的最佳实践。
However, if the table space is DMS then the ALTER TABLESPACE SQL statement can be used to first add a container in the new location and then drop the one in the old location.
但是,如果表空间是DMS,那么可以首先使用ALTERTABLESPACEsql语句向新的位置添加容器,然后再从原来位置删除容器。
The old value can be used by the DMS to make sure backend data hasn」t been modified by someone else in the meantime.
DMS可以使用原来的属性值确保后端数据在此期间没有被别的人修改。
Unless explicitly specified, new table Spaces are created as DMS with large row IDs.
除非显式指定,否则新创建的表空间都是具有较大行id的DMS。
The data format (model) of the data graph can be considered a contract between the DMS and the client.
可以将数据图的数据格式(模型)看作DMS与客户机之间的抽象。
Thus, the DMS table space MY_SPACE1 shown in Figure 1 USES two file containers since this is the way such a table space would most likely be created.
因此,图1展示的dms表空间MY _ SPACE1使用了两个文件容器,因为这样的表空间最有可能以这种方式创建。
The containers used in DMS must be a pre-allocated file or physical device, such as a hard disk drive.
DMS中所使用的容器则必须是预分配的文件或物理设备,如硬盘驱动器。
DMS containers require more maintenance, and automatic storage was introduced in DB2 V8.2.2 as a way of simplifying space management.
dms容器需要更多的维护,而自动存储是在DB 2V8.2.2引入的,它是一种简化空间管理的方法。
Automated storage is not really a separate type of table space but a different way of handling DMS storage.
自动存储实际上并不是一种表空间,而是另一种处理DMS存储的方法。
In DB2 9, newly created table Spaces are DMS by default.
在DB 29中,默认情况下,新创建的表空间是DMS。
DMS table Spaces are managed by DB2, and can be files or raw devices.
dms表空间由DB 2管理,既可以是文件,也可以是原始设备。
SAP USES DMS table Spaces, but they wanted their users to have more ease-of-use characteristics with respect to the database storage model.
SAP使用dms表空间,但他们希望其用户拥有更多关于数据库存储模型的易于使用的特性。
For DMS device container tablespaces, the operating system does not cache pages in the file system cache.
对于DMS设备容器表空间,操作系统不在文件系统缓存器中缓存页面。
If you allow file system caching for the DMS table space containers (Figure 2), the XML insert performance improves slightly while the CLOB inserts suffer.
如果您允许dms表空间容器使用文件系统缓沖(图2),那么XML插入性能仅有少量改进,而CLOB插入性能却会下降。
As a key prerequisite, be sure to use DMS table Spaces with a large page size (see Tip 2).
务必使用具有较大页宽的dms表空间(见提示2),这是一个关键的先决条件。
Behind the scenes, SDO-capable tools and DMS will deal with all the specific and cumbersome data source semantics.
取而代之的是在幕后由支持SDO的工具和DMS来处理所有特定而繁琐的数据源语义。
Figure 3 shows the employee hierarchy the DMS is using.
图3显示了DMS正在使用的雇员层次结构。
DMS usually has better performance and provides the flexibility of storing indexes and LOB data separately.
DMS通常有更好的性能,并且它提供了分别地存储索引和LOB数据的灵活性。