Once all the updates are performed you can invoke the commit method to commit the transaction, or the rollback method to roll back the transaction. Listing 5 illustrates this technique.

执行了所有更新之后，您可以调用commit方法来提交事务，或者调用rollback方法来回滚事务。

youdao

Unlike eBay EachNet, which charged its sellers for listing and transaction fees, Taobao was free to use.

FORBES: How EBay Failed In China

In order to push this model, Taobao waived all listing and transaction fees, making money just from advertising.

FORBES: What is Holding Back Digital Advertising Adspend in China?

Can you imagine eBay in the US waiving listing and transaction fees just to gain market traction, and just relying on advertising income to cover operating costs?

FORBES: What is Holding Back Digital Advertising Adspend in China?