What is InnoDB table?

What is InnoDB table?

InnoDB is a general-purpose storage engine that balances high reliability and high performance. In MySQL 5.6, InnoDB is the default MySQL storage engine. Unless you have configured a different default storage engine, issuing a CREATE TABLE statement without an ENGINE clause creates an InnoDB table.

What is InnoDB and MyISAM in MySQL?

InnoDB vs MyISAM InnoDB has row-level locking. MyISAM only has full table-level locking. InnoDB has what is called referential integrity which involves supporting foreign keys (RDBMS) and relationship constraints, MyISAM does not (DMBS). InnoDB supports transactions, which means you can commit and roll back.

How are indexes and tables stored in InnoDB?

InnoDB has its own buffer pool for caching data and indexes in main memory. InnoDB stores its tables and indexes in a tablespace, which may consist of several files. This is different from, for example, MyISAM tables, where each table is stored as a separate file.

Why does MySQL have multiple tablespaces in InnoDB?

This feature is called “multiple tablespaces” because each table that is created when this setting is in effect has its own tablespace. As to why, the reason is probably the different architectures of the two engines (MyISAM and InnoDB).

Where does MySQL dump a table in InnoDB?

You must MySQL dump to extract a dump of the table as a logical representation of the data and its corresponding index definitions. You would then load that dump to another database on the same server or another server. With innodb_file_per_table enabled, table data and its indexes live in the database folder next to the .frm file.

How many inserts per second does InnoDB do?

InnoDB is currently (October 2001) used in production at several large database sites requiring high performance. The famous Internet news site Slashdot.org runs on InnoDB. Mytrix, Inc. stores over 1TB of data in InnoDB, and another site handles an average load of 800 inserts/updates per second in InnoDB.