MagentoExplanation

Follow bellow steps Step : 1  app\etc\modules\AR_Dbchange.xml <? xml version = "1.0" ?> <config> <modules> <AR_Dbchange> <active> true </active> <codePool> local </codePool> </AR_Dbchange> </modules> </config> Step : 2  app\code\local\AR\Dbchange\etc\config.xml <? xml version = "1.0" ?> <config> <modules> <AR_Dbchange> <version> 0.1.0 </version> </AR_Dbchange> </modules> <global> <resources> <ar_dbchange_setup> <setup> <module> AR_Dbchange </module> <class> Mage_Catalog_Model_Resource_Eav_Mysql4_Setup </class> </setup> </ar_dbchange_setup> </resources> </global> </config> Step : 3 ...

Step 1: Create file app/etc/modules/Jwd_Customer.xml Add this code 1 2 3 4 5 6 7 8 9 <?xml version="1.0" encoding="UTF-8"?> <config>      <modules>          <Jwd_Customer>          <codePool>local</codePool>          <active>true</active>          </Jwd_Customer>      </modules> </config> Step 2: Create files and folder app/code/local/Jwd/Customer/etc/config.xml 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 <?xml version="1.0"?> <config>      <modules>          <Jwd_Customer>              <version>1.7.0.0</version>  ...