Delete records across multiple objects using Apex in Salesforce

Sample Code:

1. List < Id > toDeleteIds = new List < Id > { '0WO2M000000mbwnWAA',  
2. '5002M00000mnEdCQAU',  
3. '0WO2M000000qewsWAA',  
4. 'a0k2M000066AYgKQAW'};  
5.   
6.   
7. Database.DeleteResult[] deleteResults = Database.delete( toDeleteIds, true );  
8. for ( Database.DeleteResult dr : deleteResults ) {     
9.                 
10.     if ( !dr.isSuccess() ) {  
11. 
    
12.         for ( Database.Error err : dr.getErrors() ) {  
13. 
    
14.             System.debug(LoggingLevel.Error, 'The following error has occurred.'  
15.                 + '\n' + err.getStatusCode() + ': ' + err.getMessage()  
16.                 + '\n fields that affected this error: ' + err.getFields());  
17. 
    
18.         }  
19. 
    
20.     }  
21. 
    
22. }  

Note:
Don't include child record ids and master records ids if they are strongly coupled( Master Detail Relationship ).