VOB(版本对象库)。

VOBs (Version Object Base).

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版本对象库（VOB）在UCM中如同在base ClearCase使用模型中一样重要。

VOBs are just as important in UCM as they are in the base ClearCase use model.

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然而，一个构件不能跨越多个版本对象库(VOB)，最大的构件大小就是它的版本对象库(VOB)。

However, a component cannot span multiple VOBs, and the largest a component can be is the size of its VOB. Other things to consider about components include.

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