You can also use the system catalog views to retrieve information about NOT NULL, unique, primary key, foreign key, and table check constraints. For example.

也可以使用系统编目视图来检索关于NOT NULL、惟一、主键、外键和表检查约束的信息。

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Syscat.tabconst Contains a row for each unique (u), primary key (p), foreign key (f), or table check (k) constraint db2 select constname, tabname, type from syscat.tabconst.

tabconst为每个唯一性(U)、主键(p)、外键(f)或者表检查(K)约束保持一个行db2 select constname, tabname, type from syscat . tabconst。

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The US has a system, strengthened by Congress last summer, to check on new foreign investment in the US.

经过去年夏天国会的强化，美国具有一套系统以核查新进入美国的外国投资。

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Check out our Foreign Student Series for those interested in studying in the United States.

VOA: special.2010.05.27

In an appearance a blank check. before the Senate Foreign Relations Committee, Ambassador Holbrooke said President Obama's decision to send 21,000 additional troops to Afghanistan would help bolster the war effort.

VOA: standard.2009.05.12

Our advice to speculators: If you like pure gambles, check out the foreign currency market.

FORBES: In The Money

To find out about them, check out the foreign service link at the State Department's website.

FORBES: Magazine Article

The Americans object to a draft plan to strengthen the treaty by giving foreign inspectors the right to check others' installations, believing it puts American companies at a disadvantage while still allowing miscreants to cheat.

ECONOMIST: Indonesia's new leader