没有指纹数据类型，因此我假设您要存储一个图像指纹，在这种情况下，您将使用BLOB或varbinary字段来存储字节数据，或者另一个选择是在指纹比较中使用的坐标/矢量数据的存储，在这种情况下，您可能需要进行一些研究有关生物识别数据的存储.

There is no finger print data type so I assume that you want to either store an image of a finger print in which case you would use a BLOB or varbinary field to store the byte data or the other option would be the storage of the co-ordinate/vector data used in finger print comparisons, in this case you may want to do some research on the storage of biometric data.