The most common tool is the Import Assistant, found under Setup | Import/Export | Import CSV Records. The assistant walks you through a 5-step process to identify your import record, load your file, map the file to OneWorld, and then save and start the import.
In this first form, you select the record you want to update and then load your CSV file to OneWorld:
The Import Assistant supports several Import Types and, within some, there are several Record Types. For example, Transactions cover all of the transactions in the following screenshot:
After selecting the import and record type, you can change the character encoding, if you ...