BDC的导入数据库表步骤：

• Give transaction SHDB, press new recording,name,transaction
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• Press Starting Recording
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• Input and save
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• BACK
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• SAVE
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• Choose the recording and Program
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• Fill the program's name and choose transferfrom recording
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• Source code
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• Using SE11 get the Length of the fields. It must be supplied in MS-Excel
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• Define internal table in the report.
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• Call function upload after start-of-selection
•    Call function 'UPLOAD'
•    EXPORTING
•         FILENAME       =    'C:/'
•         FILETYPE       =    'ASC'
•    TABLES
•         DATA_TAB       =    ITAB.
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• Put loop after perform open group
•     loop at itab.
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• Close loop using Endloop before perform close_group
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• Replace the constains in perform statement within loop by internal name wirh field name
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• Save and Activate
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• Data in EXCEL, the order must be in the internal table.
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• Choose all fields, right click, choose FORMAL CELLs，choose txt
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• Set the weight of every datas.
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• Save as Formatted text
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• Choose ok, yes, then close excel by giving no
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• Run the program
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• Choose Call transaction,F8
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• Choose the *.prn field
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• Transfer