Even if the database is newly created and still empty, system tables and views are always present, so you can use them as follows.

即使数据库是新创建且仍然为空的，也总是会带有系统表和视图，因此，您可以按以下方法使用它们。

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It could fill the empty accounts, glue the fragmented system together and ideally make pensions much more portable.

ECONOMIST: Pensions

"It was a sea of people, " said Rathburn, who hoped to buy a Nintendo Wii game system but went home empty-handed.

CNN: 'Black Friday virgin' gets first taste of holiday shopping ritual

In reality, it is difficult to see F1's minnows backing a system that would see them end the season empty-handed.

BBC: F1 boss plans scoring revolution