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* <translate><!--T:1--> Do not change <tvar|1><code>$wgDBmwschema</code></> after <tvar|2>{{ll|Manual:Setup.php|Setup.php}}</> has been included.</translate> '''<translate><!--T:2--> Note:</translate>''' <translate><!--T:3--> <tvar|1>{{ll|Manual:Setup.php|Setup.php}}</> initializes various paths, includes some common files, starts sessions, and performs various other setup tasks for a request.</translate> <translate><!--T:4--> It is not related to the installation or setup of MediaWiki.</translate>

* <!--T:1--> Do not change <tvar|1><code>$wgDBmwschema</code></> after <tvar|2>{{ll|Manual:Setup.php|Setup.php}}</> has been included.</translate> '''<!--T:2--> Note:</translate>''' <!--T:3--> <tvar|1>{{ll|Manual:Setup.php|Setup.php}}</> initializes various paths, includes some common files, starts sessions, and performs various other setup tasks for a request.</translate> <!--T:4--> It is not related to the installation or setup of MediaWiki.</translate>

* <translate><!--T:5--> Only files in <tvar|1>'''<code>{{git file|file=includes/db/}}</code>'''</> should use <tvar|2><code>$wgDBmwschema</code></>, while everything else should use the <tvar|3>{{Class doclink|Wikimedia\Rdbms\IDatabase|type=interface|anchor= aebbee8083d4650a61479f3adbf37759e|dbSchema()}}</code></> method provided by the <tvar|4><code>{{Class doclink|Wikimedia\Rdbms\IDatabase|type=interface}}</code></> interface or extract it from the <tvar|5><code>getDomainId()</code></> method in either the <tvar|6><code>{{Class doclink|Wikimedia\Rdbms\ILoadBalancer|type=interface}}</code></> or the <tvar|7><code>{{Class doclink|Wikimedia\Rdbms\ILBFactory|type=interface}}</code></> interface.</translate> <translate><!--T:6--> The <tvar|1><code>DatabaseDomain</code></> class can extract such components from a database domain ID.</translate>

* <!--T:5--> Only files in <tvar|1>'''<code>{{git file|file=includes/db/}}</code>'''</> should use <tvar|2><code>$wgDBmwschema</code></>, while everything else should use the <tvar|3>{{Class doclink|Wikimedia\Rdbms\IDatabase|type=interface|anchor= aebbee8083d4650a61479f3adbf37759e|dbSchema()}}</code></> method provided by the <tvar|4><code>{{Class doclink|Wikimedia\Rdbms\IDatabase|type=interface}}</code></> interface or extract it from the <tvar|5><code>getDomainId()</code></> method in either the <tvar|6><code>{{Class doclink|Wikimedia\Rdbms\ILoadBalancer|type=interface}}</code></> or the <tvar|7><code>{{Class doclink|Wikimedia\Rdbms\ILBFactory|type=interface}}</code></> interface.</translate> <!--T:6--> The <tvar|1><code>DatabaseDomain</code></> class can extract such components from a database domain ID.</translate>

* <translate><!--T:7--> If you configure <tvar|1><code>$wgDBservers</code></> or <tvar|2><code>$wgLBFactoryConf</code></>, you still need to define <tvar|3><code>$wgDBname</code></>, <tvar|4><code>$wgDBmwschema</code></> (if applicable for the DB type), and <tvar|5><code>$wgDBprefix</code></> (if applicable for the DB type).</translate> <translate><!--T:8--> The combination of <tvar|1><code>$wgDBname</code></>, <tvar|2><code>$wgDBmwschema</code></>, and <tvar|3><code>$wgDBprefix</code></> define the current wiki's ''database domain''.</translate> <translate><!--T:9--> This is also called the ''local database domain''.</translate> <translate><!--T:10--> The '<tvar|1>dbname</>' and '<tvar|2>tablePrefix</>' settings in <tvar|3><code>$wgDBservers</code></> and <tvar|4><code>$wgLBFactoryConf</code></> only define the default DB/prefix when a connection is requested with <tvar|5><code>DatabaseDomain::newUnspecified()->getId()</code></> (the empty string) as the database domain, e.g. <tvar|6><code>wfGetDB( DB_REPLICA, [], <nowiki>''</nowiki> )</code></>.</translate> <translate><!--T:11--> Note that functions calls like <tvar|1><code>wfGetDB( DB_REPLICA )</code></>, which simply omit the database domain, are assumed to refer to the local database domain.</translate>

* <!--T:7--> If you configure <tvar|1><code>$wgDBservers</code></> or <tvar|2><code>$wgLBFactoryConf</code></>, you still need to define <tvar|3><code>$wgDBname</code></>, <tvar|4><code>$wgDBmwschema</code></> (if applicable for the DB type), and <tvar|5><code>$wgDBprefix</code></> (if applicable for the DB type).</translate> <!--T:8--> The combination of <tvar|1><code>$wgDBname</code></>, <tvar|2><code>$wgDBmwschema</code></>, and <tvar|3><code>$wgDBprefix</code></> define the current wiki's ''database domain''.</translate> <!--T:9--> This is also called the ''local database domain''.</translate> <!--T:10--> The '<tvar|1>dbname</>' and '<tvar|2>tablePrefix</>' settings in <tvar|3><code>$wgDBservers</code></> and <tvar|4><code>$wgLBFactoryConf</code></> only define the default DB/prefix when a connection is requested with <tvar|5><code>DatabaseDomain::newUnspecified()->getId()</code></> (the empty string) as the database domain, e.g. <tvar|6><code>wfGetDB( DB_REPLICA, [], <nowiki>''</nowiki> )</code></>.</translate> <!--T:11--> Note that functions calls like <tvar|1><code>wfGetDB( DB_REPLICA )</code></>, which simply omit the database domain, are assumed to refer to the local database domain.</translate>

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