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MySQL(InnoDB )

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871 MySQL InnoDB InnoDB MySql SavePoint AutoCommit22MySQL

MySQL (view) (store procedure)

3 MySQL3 MySQL SQL : Storage :

MySQL 5.1

4 (Storage Engine)4 MySQL 5 MySQL

5 SortingGroup byLimit MySQL ( Kickfire) query 6 ()6 MySQL DBMS: (pluggable)

: Persistence, transactions, lock granularity, compression 2 phase commit commit ( ) ( )7 78 89 Innodb, Falcon, PBXT, Maria (future) MyISAM, ISAM (dead),Maria(current)

NDB, ScaleDB (CloseSource)

Memory, Federated, Archive,Blackhole, CSV, NitroDB(CS), SphinxSE , InfoBright(CS), Queue, Graph(CS)9 MySQL ( )ISAMMyISAM

BDB (BerkeleyDB)InnoDBFalcon

10 Transaction 2001 MySQL-3.23.34a Transaction 1011 MyISAM

FullText Searching stemmingCREATE TABLE articles (articleID int not null auto_increment primary key,title varchar (2MERGE),body text,fulltext (title,body) ); SELECT title FROM articleWHERE MATCH (title, body) AGAINST ('miniprogrammer');1112 InnoDB InnoDB 10 :

SQL ACID MVCC(multi-version concurrency control ) ( )Fuzzy Checkpointing

1213 InnoDB MySQL log SELECT ( Oracle) ROLLBACK

13 MySQL InnoDB InnoDB MySql SavePoint AutoCommit141415 InnoDBREAD UNCOMMITTEDDirty Read commit READ COMMITTED REPEATABLE READ SERIALIZABLE SELECT SELECT... LOCK IN SHARE MODE 1516 Session Global Global: Set Trancation Connection Connection Session : Set Trancation Connection : Set Transaction SET [SESSION | GLOBAL] TRANSACTION ISOLATION LEVEL {READ UNCOMMITTED | READ COMMITTED | REPEATABLE READ | SERIALIZABLE}1617

()1718 (Consistent Read) : InnoDB - SELECT READ COMMITTED REPEATABLE READ

18 MySQL InnoDB InnoDB MySql SavePoint AutoCommit1919 InnoDB20 : . :

SELECT * FROM PARENT WHERE NAME = 'Jones' LOCK SHARE MODE; 2021 SQL InnoDBSELECT ... FROM ... SELECT ... FROM ... LOCK IN SHARE MODE (shared next-key locks )SELECT ... FROM ... FOR UPDATE (exclusive next-key locks)INSERT INTO ... VALUES (...) 2122 SQL InnoDB ()INSERT INTO T SELECT ... FROM S WHERE ... T

CREATE TABLE ... SELECT ... SELECT .

REPLACE INSERT . - .2223 SQL InnoDB()UPDATE ... SET ... WHERE ... - . LOCK TABLES... . MySQL . InnoDB .

23LOCK {TABLE | TABLES} [AS ] {READ [LOCAL] | [LOW_PRIORITY] WRITE}[{, [AS ] {READ [LOCAL] | [LOW_PRIORITY] WRITE}}...]

Read: Connection Connection . Read Local insert Nonconflicting Connection .24 2425 Write: Connection Connection :

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26 MySQL InnoDB InnoDB MySql SavePoint AutoCommit2727 YES : InnoDB .NO: InnoDB .DISABLED InnoDB skip-innodb .28 MySQL InnoDB

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()31 ALTER TABLE: Modifies a table definition. CREATE INDEX: Creates an index on a table. DROP DATABASE: Removes a database from a MySQL server. DROP INDEX: Removes an index on a table. DROP TABLE: Removes a table from a database. LOCK TABLES: Prevents concurrent access to tables. RENAME TABLES: Renames a table. SET AUTOCOMMIT=1: Sets the autocommit mode to on. START TRANSACTION: Begins a transaction. TRUNCATE TABLE: Removes data from a table. UNLOCK TABLES: Unlocks locked tables.32 Commit RollBack Commit .32 MySQL InnoDB InnoDB MySql SavePoint AutoCommit333334SAVEPOINT ROLLBACK TO SAVEPOINT SavePoint

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35 SavePoint ()35 MySQL InnoDB InnoDB MySql SavePoint AutoCommit363637AutoCommit Commit set

SET AUTOCOMMIT = 0;SET ATOCOMMIT = 1;

SELECT @@autocommit;

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AUTOCOMMIT = 0 session Commit RollBack 3839 InnoDB ( yahoo ) hash InnoDB MySQL : index SELCET COUNT(*) 3940 () InnoDB CPU MySQL 40Bannon, Chin, Kassam, and Roszko, InnoDB Concrete Architecture. Waterloo, Ontario: Software Architecture Group, University of Waterloo, 2002Bannon, Chin, Kassam, and Roszko, MySQL Conceptual Architecture. Waterloo, Ontario: Software Architecture Group, University of Waterloo, 2002M Di Giacomo, MySQL: lessons learned on a digital library, Software, IEEE, - ieeexplore.ieee.org, 2005.Leon Atkinson, Core MySQL, Prentice Hall PTR,ISBN 0-13-00661902, 2002. Silberschatz, H. Korth and S. Sudarshan, Database system concepts, Mc Graw Hill 4th Edition, ISBN 0-07-112268-0, 2002.MySQL reference manual, available at http://www.mysql.org.Atkinson, Leon. Core, MySQL: The Serious Developers Guide. New Jersey: Prentice Hall Publishing, 2002.http:// www.innoDB.com

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