This question runs in a pre-configured Salesforce environment - no personal connection required.

Create a method that deletes all Contact records in a specific Department using DML operations.

Parameters:

  • department (String): The Department of contacts to delete

Returns:

  • Integer: The number of contacts deleted, or 0 if none found

Requirements:

  • Use DML delete operation
  • Handle null or empty department by returning 0
  • Query contacts by Department before deleting
  • Handle DML exceptions gracefully

Example:

Integer deletedCount = deleteContactsByDepartment('Sales');
// Returns: 3 (number of deleted contacts)
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