General Knowledge

Salesforce offers two ways to build user interfaces (UI) in Lightning Experience: low-code and pro-code. Use low-code point-and-click tools to implement business logic or build user interfaces. Use pro-code tools to write your own code and fully customize your apps.  Low-code:  Lightning pages Quick actions URL buttons Utility bar Flows   Pro-code:   Lightning Web

 Validation Rule For Phone Field In Salesforce  Value should be like length should be 14 and start should be with + FORMULA: OR(LEN(Phone) != 14, LEFT(Phone, 1) != ‘+’);

SELECT AccountId, count(Id) FROM Contact GROUP BY AccountId HAVING count(Id) = 1

Validation Rule for minimum age at least 18 and maximum age should not be more than 100 years in Salesforce  OR(TODAY() < ADDMONTHS( Age__c ,216), TODAY() > ADDMONTHS( Age__c ,1200)) Note: Where Age__c is Date type field.  Why we use 216 & 1200 : 216/12 = 18  And 1200/12 = 100