Also, the block structured nature of a BPEL process is too limited for modelling purposes.
此外，BPEL过程的块结构天性对于建模也有太多的限制。
SSDS you can think of as a structured data store in the cloud(building block service), which is accessed using Internet protocols using a basic data manipulation language.
你可以认为SSDS是一个可以存储结构化数据的云（用以构建大型应用），你可以使用基本的数据操作语言通过互联网协议对它进行访问。
The BPMN 2.0 proposal includes an optional mapping of a BPMN subset to BPEL which is restricted to block-structured flows without cycles.
BPMN 2.0提案包括了一个从BPMN子集到BPEL的可选映射，它仅限于没有循环的块结构流程。
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