What lead developer or Architect should know before starting the project/Product –Part2MySQL supports several storage engi...
The CSV storage engine stores data in text files using comma-separated values format.The BLACKHOLE storage engine accepts ...
engine is to serve as an example in the MySQL source code that illustrates how to begin writingnew storage engines. As suc...
* InnoDB* MyISAM* Mysql* Sysadmin
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What is MYSQL Engine and Which mysql engine slect when design database

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MySQL supports several storage engines that act as handlers for different table types. MySQL storage engines include both those that handle transaction-safe tables and those that handle nontransaction-safe tables:

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What is MYSQL Engine and Which mysql engine slect when design database

  1. 1. What lead developer or Architect should know before starting the project/Product –Part2MySQL supports several storage engines that act as handlers for different table types. MySQLstorage engines include both those that handle transaction-safe tables and those that handlenontransaction-safe tables:MYISAM Default MYSQL Engine Fast for reading and inserting Table level lock Fulltext searching capabilities No transactional integrity (ACID compliance) No rollback abilities No Foriegn keys and cascading deletes and updates Row limit of 4,284,867,296 rows Maximum of 64 indexes per rowWhen to use MyISAM? -MyISAM is designed with the idea that your database is queried farmore than its updated and as a result it performs very fast read operations. If your read towrite(insert|update) ratio is less than 15% then you should use MyISAM.INNOBD Fast for updating Transactional integrity (ACID compliance) Row level locks Foriegn keys and cascading deletes and updates Foriegn keys and cascading deletes and updates No full text indexing Cannot be compressed for fast, read-onlyWhen to use INNOBD? -INNOBD is designed with the idea that your database is concurrentinsert/Update and raea data same time with the suppot of the Transaction and Foriegn keys. Ifyour using any ecommarce or other sensitive information then you should use INNOBD.The EXAMPLE storage engine is a “stub” engine that does nothing. You can create tables withthis engine, but no data can be stored in them or retrieved from them. The purpose of thisengine is to serve as an example in the MySQL source code that illustrates how to begin writingnew storage engines. As such, it is primarily of interest to developers.NDBCLUSTER (also known as NDB) is the storage engine used by MySQL Cluster to implementtables that are partitioned over many computers. It is available in MySQL 5.0 binarydistributions. This storage engine is currently supported on a number of Unix platforms.Experimental support for Windows is available beginning in MySQL Cluster NDB 7.0; however,we do not intend to backport this functionality to MySQL 5.0The ARCHIVE storage engine is used for storing large amounts of data without indexes with avery small footprint.
  2. 2. The CSV storage engine stores data in text files using comma-separated values format.The BLACKHOLE storage engine accepts but does not store data and retrievals always return anempty set.The FEDERATED storage engine was added in MySQL 5.0.3. This engine stores data in a remotedatabase. Currently, it works with MySQL only, using the MySQL C Client API. In future releases,we intend to enable it to connect to other data sources using other drivers or client connectionmethodsSome Command for MYSQL EngineHow to change MYSQL Engine- ALTER TABLE prosatya ENGINE = innodb;Which MYSQL engine support you database - SHOW ENGINES;MySQL supports several storage engines that act as handlers for different table types. MySQLstorage engines include both those that handle transaction-safe tables and those that handlenontransaction-safe tables:MYISAM Default MYSQL Engine Fast for reading and inserting Table level lock Fulltext searching capabilities No transactional integrity (ACID compliance) No rollback abilities No Foriegn keys and cascading deletes and updates Row limit of 4,284,867,296 rows Maximum of 64 indexes per rowWhen to use MyISAM? -MyISAM is designed with the idea that your database is queried farmore than its updated and as a result it performs very fast read operations. If your read towrite(insert|update) ratio is less than 15% then you should use MyISAM.INNOBD Fast for updating Transactional integrity (ACID compliance) Row level locks Foriegn keys and cascading deletes and updates Foriegn keys and cascading deletes and updates No full text indexing Cannot be compressed for fast, read-onlyWhen to use INNOBD? -INNOBD is designed with the idea that your database is concurrentinsert/Update and raea data same time with the suppot of the Transaction and Foriegn keys. Ifyour using any ecommarce or other sensitive information then you should use INNOBD.The EXAMPLE storage engine is a “stub” engine that does nothing. You can create tables withthis engine, but no data can be stored in them or retrieved from them. The purpose of this
  3. 3. engine is to serve as an example in the MySQL source code that illustrates how to begin writingnew storage engines. As such, it is primarily of interest to developers.NDBCLUSTER (also known as NDB) is the storage engine used by MySQL Cluster to implementtables that are partitioned over many computers. It is available in MySQL 5.0 binarydistributions. This storage engine is currently supported on a number of Unix platforms.Experimental support for Windows is available beginning in MySQL Cluster NDB 7.0; however,we do not intend to backport this functionality to MySQL 5.0The ARCHIVE storage engine is used for storing large amounts of data without indexes with avery small footprint.The CSV storage engine stores data in text files using comma-separated values format.The BLACKHOLE storage engine accepts but does not store data and retrievals always return anempty set.The FEDERATED storage engine was added in MySQL 5.0.3. This engine stores data in a remotedatabase. Currently, it works with MySQL only, using the MySQL C Client API. In future releases,we intend to enable it to connect to other data sources using other drivers or client connectionmethodsSome Basic Command of MYSQL every developer should know -MySQL command prompt login - mysql –hhost –uuser –ppassword;How to change MYSQL Engine- ALTER TABLE prosatya ENGINE = innodb;Which MYSQL engine support you database - SHOW ENGINES;Show database - show databases;Select database - Use databaseName ;Display all of tables in database - Show tables ;Display table structure – DESCRIBE TableName ; or DESC TableName;For table or query performance - EXPLAIN select * from tbl_users where id=1 ;* InnoDB* MyISAM* Mysql* Sysadmin
  4. 4. * InnoDB* MyISAM* Mysql* Sysadmin

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