What is TAB in Salesforce.

Tab is a user interface component to user creates to display custom object data.

   There are three type of tabs.

        Custom Tabs

        Visual force Tabs

         Web Tabs

What is the use of “FOR UPDATE” in SOQL

FOR UPDATE is used to lock the records.

                Ex:  Campaign cam = [SELECT id FROM Campaign LIMIT 1 FOR UPDATE];

What is the use of “ALL ROWS” in SOQL

 ALL ROWS is used for retrieving the records from recycle bin.

                         Ex:  SELECT Id from Campaign ALL ROWS

                        -> “ALL ROWS” does not work in developer console.

How to call Apex class using java script

Apex Class:

global class ClassName{

 webService static String methodName(String camName) {

            Campaign cam = new Campaign(name = camName);

            return cam.name;

       }

}

Java Script:

var Campaign = sforce.sObject(“Campaign”);

var String = sforce.apex.exceute(“ClassName”,”methodName”,{name=”ABC”});

Difference between “Export” and “Export All” in Data Loader in Salesforce

Export : It is used to export the Salesforce Data(excluding recycle bin’s data) into your local system.

Export All :  It is used to export the Salesforce Data(including recycle bin’s data) into your local system.