Firstly, the author worked on the requirement Analysis, and got the functional requirement, data flow diagrams and data dictionary.

首先对开发系统进行了需求分析，得到了功能需求，数据流图和数据字典。

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Many companies will decide that there is not a requirement for an involved big data project.

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Plus, Bluetooth can transmit at up to 3 megabits per second, which means it can accommodate any data or media requirement.

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EU-ETS also creates a costly administrative burden to operators, and the requirement that operators share sensitive personal data raises serious privacy and confidentiality concerns.

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