Using DML, you can insert new records and commit them to the database. You can also
update the field values of existing records.
Inserting and Updating Records
Using DML, you can insert new records and commit them to the database. Similarly, you can update the field values of existing records.
Merging Records
When you have duplicate lead, contact, case, or account records in the database, cleaning up your data and consolidating the records is a good idea. You can merge up to three records of the same sObject type. The merge operation merges the duplicate records into the main record, deletes the duplicate records, and reparents any related records.
