My Requirement:
 I have one custom profile (Test User)  and  one Custom Object.
 This profile having delete access on Opportunity,Contact and this Custom Object.
 Now I want to write a trigger to restrict user with ""Test User"" profile from deleting above mentioned   3 object records.

Or a sinlge apex class that will work on these 3 objects.

Thank you in advance

How to map Salesforce Fields with External fields in Apex Class making a callout to external system to send data from salesforce to external system.
 

When any Case Object is Closed Send All the Case details  to External System.

And I want to store the respone in the Salesforce Object

 Can anyone help me with any Example that will fit into this requirement
(All needs to be done within the Apex Class  that accepts number of records also  I need to Map Case Fields with External Fields).
Thank you in advance.

When any Case Object is Closed Send All the Case details  to External System.

And I want to store the respone in the Salesforce Object

 Can anyone help me with any Example that will fit into this requirement
(All needs to be done within the Apex Class  that accepts number of records also  I need to Map Case Fields with External Fields).
Thank you in advance.