MySQL with InnoDB . An InnoDB secondary index is also a B-Tree.With InnoDB , we should define such tables as:.Now we have less data in the InnoDB buffer pool. XA transaction support is limited to the InnoDB storage engine.
Only the InnoDB storage engine supports row level locking. 您可以轻松估算InnoDB B-Tree中的级别数。 You can easily estimate the number of levels in an InnoDB B-Tree. The basics of the InnoDB undo logging and history system.The most common are the MyISAM and the InnoDB engines.说明InnoDB 中的主键模型及其对磁盘使用的影响. Illustrating Primary Key models in InnoDB and their impact on disk usage. 解决Magento安装时数据库不支持InnoDB 存储引擎问题. Magento- Fixing Database server does not support the InnoDB storage engine. 另一方面,InnoDB 表可以更安全地防止数据丢失。 On the other hand, the InnoDB tables are more safe against the data loss. 上一篇:批量将MyISAM引擎转换为InnoDB 引擎. One was converting 40 Million rows from a MyISAM engine to an InnoDB Engine. 所有InnoDB 数据和索引被存在B树中,并且它们的填充因子可能从50%到100%。 All InnoDB data and indexes are stored in B-trees, and their fill factor may vary from 50% to 100%. 对于大表,这节约了大量磁盘I/O,因为InnoDB 可以使用它的插入缓冲来在一批内写第二个索引记录。 For big tables, this saves a lot of disk I/O because InnoDB can use its insert buffer to write secondary index records in a batch. 所有InnoDB 数据和索引存储在B树中,它们的填充因子可能在50%到100%之间不等。 All InnoDB data and indexes are stored in B-trees, and their fill factor may vary from 50% to 100%. Mysql5.5及更高版本已切换到InnoDB 引擎,以确保引用完整性约束和更高的并发性。 Versions of MySQL 5.5 and greater have switched to the InnoDB engine to ensure referential integrity constraints, and higher concurrency. 这是一个MySQLInnoDB 表的属性,关于这个问题请参阅MySQL文件:WEB. This is indeed a property of MySQL InnoDB table, please refer to the MySQL documentation regarding this issue: WEB. InnoDB 需要索引在外键和参考键,以便外键检查可以快速,不需要表扫描。InnoDB needs indexes on foreign keys and referenced keys so that foreign key checks can be fast and not require a table scan. CommunityEdition包括多个存储引擎,如InnoDB 和MyISAM,内存和NetworkDatabase(NDB)。 The Community Edition includes multiple storage engines, such as InnoDB and MyISAM, memory and Network Database(NDB). InnoDB 存储它的表&索引在一个表空间中,表空间可以包含数个文件(或原始磁盘分区)。InnoDB stores its table and index on a table space, table space may contain several file(or the original disk partition). 只有InnoDB 支持外键引用完整性约束,如果我们计划使用此约束,则选择很明确。 Only InnoDB supports foreign key referential integrity constraint and if we plan to use this constraint, then the choice is clear. InnoDB 需要对外键和被引用键的索引以便外键检查可以快速进行且不需要一个表扫描。InnoDB needs indexes on foreign keys and referenced keys so that foreign key checks can be fast and not require a table scan. 使用InnoDB 的表仍然可以被破坏,但由于其自动恢复功能,表损坏和崩溃的风险明显降低。 Tables using InnoDB can still be corrupted, but because of its auto-recovery features the risk of table corruption and crashes is decidedly lower. Innodb_thread_concurrency=nInnoDB 驱动程序能够同时使用的最大线程个数(默认设置是8)。 Innodb_thread_concurrency= n InnoDB to drive the maximum number of threads to a program can use at the same time(default is 8). Mysqld程序:InnoDB -日志innodb_log_group_home_dir=p用来存放InnoDB 日志文件的目录路径(如ib_logfile0、ib_logfile1等)。 The directory path innodb _log_group_home_dir= P is used to store the InnoDB log file(such as ib_logfile0, ib_logfile1 etc.). Innodb_log_group_home_dir=p用来存放InnoDB 日志文件的目录路径(如ib_logfile0、ib_logfile1等)。 The directory path innodb_log_group_home_dir= P is used to store the InnoDB log file(such as ib_logfile0, ib_logfile1 etc.). Innodb_log_archive=1启用InnoDB 驱动程序的archive(档案)日志功能,把日志信息写入ib_arch_log_n文件。 Innodb_log_archive= 1 to enable the InnoDB driver for archive(file) log, the log information is written into the ib_arch_log_n file. Skip-innodb不加载InnoDB 数据表驱动程序-如果用不着InnoDB 数据表,可以用这个选项节省一些内存。 Skip-innodb does not load the InnoDB data table driven program-- if not InnoDB tables, you can use this option to save some memory. InnoDB:InnoDB 数据库引擎都是造就MySQL灵活性的技术的直接产品,这项技术就是MYSQL++API。InnoDB : The InnoDB database engine is the direct product of creating the flexibility of MySQL technology, this technology is the MYSQL++ API.
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