• Q: Can the local index partition and data partition be in the same table space for each partition?

    Q每个分区本地索引分区数据分区能否处于同一空间中?

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  • Index scans are usually the most efficient way to access data, especially when the table is large but the number of qualified rows is small.

    一般来说索引扫描访问数据有效方法尤其是很大符合条件很少时候

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  • An index only scan is an index access that is not followed by a table access because the index itself contains all the requested data.

    扫描索引包含访问的索引访问,因为索引本身包含了所有被请求数据

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  • From the table space snapshot data, the used page objects can be used to tell the total size of the index, tables, and the total database size.

    空间快照数据中可以看出,这些页面对象用于告知索引数据库大小

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  • This means that you should either load your data prior to creating your index or update the statistics on your table after your data is loaded.

    意味着应该创建索引之前加载数据或者加载数据之后更新统计信息

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  • You can use the in clause to create an index in the same table space where user data resides, or in a different table space.

    可以使用in子句用户数据所在空间创建一个索引或者其他表空间上创建索引。

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  • The alternative to shredding is to store and index the MIML data in a column of type XML in a DB2 table.

    作为分解方法一种备选方法MIML数据存储db2中的xml类型列中为之建立索引

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  • Other table spaces for user, temporary and index data need to be created after the database has been created, and a user needs to be assigned to these table spaces before they can be used.

    其他用于用户数据临时数据索引数据的空间需要创建数据库之后另行创建,并且使用这些表空间之前,还需要之指定一个用户。

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  • PCTFREE indicates to DB2 what percentage of each page in the table space or index to leave free when either loading or reorganizing the data.

    PCTFREE 告诉DB2装载重组数据空间索引中的每个留出多少百分比空余空间。

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  • To check integrity of table data, you can index keys to table rows, and table rows to associated LOBs.

    检查数据完整性可以表的数据设置索引将表的数据行关联到相关的LOB。

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  • The optimizer ACTS based on statistical data about the number of rows in a table, the use of space by a table or index, and other information.

    优化操作基于数据中的行数数据索引使用空间以及其他信息的相关统计数据。

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  • For each table you want to register, there will be a change data (CD) table and CD index created.

    对于注册每个都会创建一个更改数据(CD)表CD索引

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  • If multiple indexes are defined on the table, the optimizer USES the index that can rule out the most data in the table.

    如果定义了多个索引那么优化器就使用可以排除最多数据索引

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  • If you don't specify an index or long table space, partitioned indexes and long column data will go in the same table space as the data.

    如果索引指定空间分区索引长列数据存储数据相同的表空间中。

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  • Otherwise, its data or keys will be scattered throughout the extents that have been occupied by the table or index.

    否则数据分散该表或索引占用所有区段中

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  • The way to establish a certain data clustering property in DB2 is to reorganize the table according to an index.

    DB 2建立数据聚集属性方法根据一个索引进行重组

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  • "Extensive" in this case may mean that 10 to 20 percent of the table and index data has been affected.

    此处大量可能意味着10%20%的索引数据受到了影响。

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  • Hence, while you can specify the table space where the index object containing all the indexes for a data partition go, it is not possible to specify a table space for each individual index.

    因此索引对象包含数据分区全部索引情况下,指定空间时,无法每个单独的索引指定表空间。

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  • In addition to the RUNSTATS, you can automate database backups and REORGs (defragmentation of table and index data).

    除了RUNSTATS外,还可以数据库备份REORG(索引数据整理)自动化

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  • In this example, 10 percent of table data pages are used for the collection of table statistics, while for index statistics all of the index pages will be used.

    ,10%数据用于统计信息的收集对于索引统计信息,使用所有的索引页。

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  • DB2 USES buffer pools to cache the table and index data as they are being read or written to the hard disk drive.

    硬盘驱动器读写索引数据DB 2使用缓冲缓存它们

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  • When creating a partitioned table space in DB2 UDB V7, DB2 divides the data among the partitions according to the part clause of the CREATE INDEX statement.

    DB 2UDBV 7中创建分区空间时,DB 2根据CREATEindex语句part子句数据划分到几个分区上。

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  • The MTK GUI and CLI provide more flexibility to include your own DATA, INDEX, and LONG DATA table spaces.

    MTKGUICLI提供了大的灵活性,使可以包括自己的DATAINDEXLONG DATA空间

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  • The data, index, long field, and LOB portions of a table can be stored in the same tablespace, or can be individually broken out into separate tablespaces for performance reasons.

    一个中的数据索引long字段LOB部分可以存储相同空间中,可以分别放到不同空间中,以提高性能。

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  • Now, to get various portions of the data, I create a stats.php page that, given a start and end index, returns an HTML table with just that portion of the data.

    现在为了获得数据各个部分创建stats.php页面,该页面提供了一个开始结束索引返回一个包含部分数据的HTML表格

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  • HSQLDB keeps all table and index data in memory, saving all SQL statements issued into a file named database.script, which also ACTS as the transaction log.

    HSQLDB所有索引数据放在内存中,将所有发出sql语句保存一个名为database .script文件中,文件同时也充当事务日志的角色。

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  • IndexTSName: Identifies the table space in which the partitioned index for each data partition is to be stored.

    IndexTSName:指定存储每个数据分区分区索引空间

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  • A large table space named USERSPACE1, which is used to store all user-defined objects along with table data, index data, large object (LOB) data, and long value data.

    一个名为userspace1空间用于存储所有用户定义对象以及数据索引数据、大对象(LOB)数据数据。

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  • The above example shows that the data for the table will be stored in table space 'tbls1', while the index pages will be stored in table space 'tbls2'.

    上面例子表明中的数据存储空间' tbls1 '中索引将存储在表空间' tbls2 '中

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  • For example, using the sample data in Figure 1, the following index idx1 would be useful for look-ups and joins based on author IDs across all documents in the XML column bookinfo of the table books.

    例如使用1中的示例数据,可以根据author id使用下面索引idx 1books的xmlbookinfo中的所有文档进行查找连接

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