Salesforce4U

 Here is my previous post related to map contains method.  How contains key method works ? Does it allow partial matches or exact matches ? We know map contains key method is case sensitive. if you are create a key using First Name , Last Name and DOB to find unique Account record then system will consider 2 different record for below scenario. 1. First Name - "Capital"  Last Name- "Testing" DOB- 01/01/1989 2. First Name - "CAPITAL" Last Name - "TESTING" DOB- 01/01/1989 The work wound is  map<String,Account> map_Name_Acc = new map<String,Account>(); String sKey = ''; for(Account acc:[SELECT firstname,Lastname,DOB__c from Account limit 10]{      sKey = acc.FirstName+'_'+ acc.LastName+'_'+acc.DOB__c; // this will create duplicate records since key is case sensitive  sKey = acc.FirstName.toLowercase()+'_'+ acc.LastName.toLowercase()+'_'+acc.DOB__c;  } toLowercase() - convert name to lower case, ...