在系统分析中先后用数据流程图、系统的功能结构图分析了BBS系统所需的各种数据。

Successively used the data stream chart the system function structure drawing in the system analysis to analyze each kind of data which the BBS system needed.

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在系统分析中，论文对系统功能结构、数据流程和数据结构进行了分析，运用数据流程图对系统进行了描述。

In system analysis, the thesis analyses system function structure, data flow and the data structure and describes system with data flow chart.

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在系统分析中先后用数据字典、数据流程、系统的功能结构图、ER图分析了系统所需的各种数据。

Analyzed system an every kind of data for needing with the function construction diagram, the diagram of er of the data dictionary, data process, system successively in system analyze.

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