{"id":480,"date":"2024-07-18T12:23:19","date_gmt":"2024-07-18T12:23:19","guid":{"rendered":"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/?p=480"},"modified":"2024-07-18T12:24:55","modified_gmt":"2024-07-18T12:24:55","slug":"myisam-vs-innodb-differenc","status":"publish","type":"post","link":"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/myisam-vs-innodb-differenc\/","title":{"rendered":"MyISAM vs. InnoDB differences easy to understand"},"content":{"rendered":"<p class=\"h3\">MyISAM vs. InnoDB Introduction<\/p>\n<p>A storage engine is a DBMS mechanism for managing data in a database. Choosing the right storage engine is a strategic decision that impacts database development, scalability, and performance.<\/p>\n<p>MySQL offers two primary storage engines: MyISAM and InnoDB. Each engine has pros and cons that impact how a database handles tasks. Knowing the distinctions between the two engines helps you make an informed decision for your use case.<\/p>\n<p><span id=\"span-87-157\" class=\"ct-span oxy-stock-content-styles\"><strong>In this article, you will learn the main differences between MyISAM vs. InnoDB storage engines and why InnoDB is the default storage engine in newer MySQL installations.<\/strong><\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/myisam-vs-innodb-differenc\/#What_Are_MyISAM_InnoDB\" >What Are MyISAM &amp; InnoDB?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/myisam-vs-innodb-differenc\/#MyISAM_vs_InnoDB_Main_Differences\" >MyISAM vs. InnoDB Main Differences<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/myisam-vs-innodb-differenc\/#1_ACID_Compliance\" >1. ACID Compliance:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/myisam-vs-innodb-differenc\/#2_Transactions\" >2. Transactions:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/myisam-vs-innodb-differenc\/#3_Foreign_Keys\" >3. Foreign Keys:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/myisam-vs-innodb-differenc\/#4_Locking_Mechanisms\" >4. Locking Mechanisms:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/myisam-vs-innodb-differenc\/#5_Performance\" >5. Performance:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/myisam-vs-innodb-differenc\/#6_Data_Integrity\" >6. Data Integrity:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/myisam-vs-innodb-differenc\/#7_Storage_Formats\" >7. Storage Formats:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/myisam-vs-innodb-differenc\/#8_Full-Text_Search\" >8. Full-Text Search:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/myisam-vs-innodb-differenc\/#9_Disk_Space_Usage\" >9. Disk Space Usage:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/myisam-vs-innodb-differenc\/#10_Backup_and_Recovery\" >10. Backup and Recovery:<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 id=\"ftoc-heading-1\" class=\"wp-block-heading ftwp-heading\"><span class=\"ez-toc-section\" id=\"What_Are_MyISAM_InnoDB\"><\/span>What Are MyISAM &amp; InnoDB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>MyISAM<\/strong> (<strong>My<\/strong> <strong>I<\/strong>ndexed <strong>S<\/strong>equential <strong>A<\/strong>ccess <strong>M<\/strong>ethod) is one of the oldest <a href=\"https:\/\/www.squarebrothers.com\/mssql-hosting-india\/\" target=\"_blank\" rel=\"noopener\">MySQL<\/a> storage engines. The engine has a small data footprint and is fast with read-heavy operations, making it suitable for a data warehousing architecture and some web applications. It was the default storage engine for MySQL versions before 5.5. However, MyISAM lacks transaction and foreign key support, which is crucial for some database systems.<\/p>\n<p><strong>InnoDB<\/strong> is the current default storage engine for MySQL. The engine supports foreign keys, row-level locking, and ACID transactions. These features make InnoDB a reliable and suitable choice for modern applications. Its crash recovery mechanism, data integrity, and high performance are some of the reasons why InnoDB is currently the default MySQL engine.<\/p>\n<p>Despite InnoDB&#8217;s numerous advantages, there are some use cases where MyISAM is a better choice. The decision depends on the specific application needs, data integrity importance, and database workload.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-488 size-full\" src=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-content\/uploads\/2024\/07\/mysql-innodb.png\" alt=\"MyISAM vs. InnoDB\" width=\"706\" height=\"453\" srcset=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-content\/uploads\/2024\/07\/mysql-innodb.png 706w, https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-content\/uploads\/2024\/07\/mysql-innodb-300x192.png 300w\" sizes=\"auto, (max-width: 706px) 100vw, 706px\" \/><\/p>\n<h2 id=\"ftoc-heading-2\" class=\"wp-block-heading ftwp-heading\"><span class=\"ez-toc-section\" id=\"MyISAM_vs_InnoDB_Main_Differences\"><\/span>MyISAM vs. InnoDB Main Differences<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The table below shows the main differences between MyISAM and InnoDB.<\/p>\n<figure class=\"wp-block-table is-style-stripes\">\n<table class=\"has-fixed-layout\">\n<thead>\n<tr>\n<th><strong>Features<\/strong><\/th>\n<th><strong>MyISAM<\/strong><\/th>\n<th><strong>InnoDB<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Default Engine<\/strong><\/td>\n<td>No.<\/td>\n<td>Yes.<\/td>\n<\/tr>\n<tr>\n<td><strong>Transactions<\/strong><\/td>\n<td>Non-transactional.<\/td>\n<td>Transactional.<\/td>\n<\/tr>\n<tr>\n<td><strong>Locking<\/strong><\/td>\n<td>Table locking.<\/td>\n<td>Row-level locking.<\/td>\n<\/tr>\n<tr>\n<td><strong>Foreign Keys<\/strong><\/td>\n<td>No.<\/td>\n<td>Yes.<\/td>\n<\/tr>\n<tr>\n<td><strong>Full-Text Search<\/strong><\/td>\n<td>Yes.<\/td>\n<td>Yes (in some versions).<\/td>\n<\/tr>\n<tr>\n<td><strong>Storage<\/strong><\/td>\n<td>Lower overhead in multiple files.<\/td>\n<td>Efficient for large datasets in a single file.<\/td>\n<\/tr>\n<tr>\n<td><strong>Performance<\/strong><\/td>\n<td>Fast for read-heavy operations.<\/td>\n<td>Fast for mixed read-write and highly concurrent operations.<\/td>\n<\/tr>\n<tr>\n<td>Indexing<\/td>\n<td>Full-text.<\/td>\n<td>Full-text, clustered, adaptive hashing.<\/td>\n<\/tr>\n<tr>\n<td><strong>Crash Recovery<\/strong><\/td>\n<td>Limited.<\/td>\n<td>Robust.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h3><span class=\"ez-toc-section\" id=\"1_ACID_Compliance\"><\/span><strong>1. ACID Compliance:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>MyISAM:<\/strong> Not ACID compliant. It does not support transactions.<\/li>\n<li><strong>InnoDB:<\/strong> ACID compliant. Supports transactions, ensuring data integrity through properties like atomicity, consistency, isolation, and durability.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"2_Transactions\"><\/span><strong>2. Transactions:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>MyISAM:<\/strong> Lacks transaction support, meaning it does not have COMMIT and ROLLBACK capabilities.<\/li>\n<li><strong>InnoDB:<\/strong> Supports transactions with COMMIT, ROLLBACK, and SAVEPOINT.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"3_Foreign_Keys\"><\/span><strong>3. Foreign Keys:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>MyISAM:<\/strong> Does not support foreign key constraints.<\/li>\n<li><strong>InnoDB:<\/strong> Supports foreign key constraints, allowing for referential integrity between tables.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"4_Locking_Mechanisms\"><\/span><strong>4. Locking Mechanisms:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>MyISAM:<\/strong> Uses table-level locking, which can lead to contention and reduced performance with concurrent writes.<\/li>\n<li><strong>InnoDB:<\/strong> Uses row-level locking, which allows for higher concurrency and better performance with concurrent transactions.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"5_Performance\"><\/span><strong>5. Performance:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>MyISAM:<\/strong> Generally faster for read-heavy operations due to simpler data structures and less overhead.<\/li>\n<li><strong>InnoDB:<\/strong> Better performance for write-heavy operations due to its support for row-level locking and transactions.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"6_Data_Integrity\"><\/span><strong>6. Data Integrity:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>MyISAM:<\/strong> Vulnerable to data corruption in case of a crash since it lacks transactional support.<\/li>\n<li><strong>InnoDB:<\/strong> More robust in maintaining data integrity in case of a crash due to its transactional support and automatic crash recovery.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"7_Storage_Formats\"><\/span><strong>7. Storage Formats:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>MyISAM:<\/strong> Stores each table in three files on disk: <code>.frm<\/code> (table format), <code>.MYD<\/code> (table data), and <code>.MYI<\/code> (indexes).<\/li>\n<li><strong>InnoDB:<\/strong> Stores tables and indexes in a tablespace, which can be a single or multiple files.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"8_Full-Text_Search\"><\/span><strong>8. Full-Text Search:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>MyISAM:<\/strong> Supports full-text search natively.<\/li>\n<li><strong>InnoDB:<\/strong> Supports full-text search starting from MySQL 5.6, though with different performance characteristics.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"9_Disk_Space_Usage\"><\/span><strong>9. Disk Space Usage:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>MyISAM:<\/strong> Generally requires less disk space due to simpler storage mechanisms.<\/li>\n<li><strong>InnoDB:<\/strong> Requires more disk space due to additional overhead for transactions, rollback segments, and other features.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"10_Backup_and_Recovery\"><\/span><strong>10. Backup and Recovery:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>MyISAM:<\/strong> Simpler backup through copying files, but slower recovery in case of corruption.<\/li>\n<li><strong>InnoDB:<\/strong> More complex backup processes, but faster and more reliable recovery through its crash recovery mechanism.<\/li>\n<\/ul>\n<p>Above will clearly explained\u00a0<strong>the difference between MyISAM vs. InnoDB.<\/strong><\/p>\n<p>To fix mysqldump access denied process privilege error <a href=\"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/mysqldump-access-denied\/\">click here.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>MyISAM vs. InnoDB Introduction A storage engine is a DBMS mechanism for managing data in a database. Choosing the right storage engine is a strategic decision that impacts database development, scalability, and performance. MySQL offers two primary storage engines: MyISAM and InnoDB. Each engine has pros and cons that impact how a database handles tasks. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":488,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[90,89],"class_list":["post-480","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-innidb","tag-myisam"],"_links":{"self":[{"href":"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-json\/wp\/v2\/posts\/480","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-json\/wp\/v2\/comments?post=480"}],"version-history":[{"count":10,"href":"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-json\/wp\/v2\/posts\/480\/revisions"}],"predecessor-version":[{"id":491,"href":"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-json\/wp\/v2\/posts\/480\/revisions\/491"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-json\/wp\/v2\/media\/488"}],"wp:attachment":[{"href":"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-json\/wp\/v2\/media?parent=480"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-json\/wp\/v2\/categories?post=480"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hyderabadwebhosting.co.in\/tutorials\/wp-json\/wp\/v2\/tags?post=480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}