You can have other methods update or fetch the large data on demand.

您可使用其他方法在需要时更新或撷取大型资料。

youdao

An OMElement implementation can use an instance of OMDataSource to supply data on demand, and the OMFactory interface provides a method to create this type of element.

OMElement实现可以使用OM DataSource的实例按需提供数据，而OM Factory接口提供了创建这种类型的元素的方法。

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The iPhone client data will be retrieved on demand.

只要有需求，就可以检索 iPhone 客户端数据。

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It's completely out of date." Stanley says inconsistencies in the law have made it easier for law enforcement and government agencies to demand that service providers give them consumer data stored on cloud servers.

VOA: standard.2010.06.22

Therefore, an automated approach that provides data on demand is required.

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At the time, the federal government was also pushing hard to get companies to add so-called "key escrow" type technologies to their encryption products so that law enforcement could obtain access to encrypted data on demand.

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However, such an overhaul should not have to mean a replacement or upgrade to existing systems, but rather a universal platform that connects throughout the bank, interrogating all the necessary data on demand, and using the latest high speed technology.

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