There are two big classification, there are three kinds of classification in the classification problem under
Table structure is roughly like this:
The primary key ID
Big classification
The classification of

Answer

Now to be arranged in:

The 1 big classification 1 problem answer
The 1 big classification 2 questions answered
Category 1 category 3 answer
The 2 big classification 1 answer
The 2 big classification 2 questions answered
The 2 big classification 3 questions to answer

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The building Lord baidu "line turned column", have a question to ask,

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Table structure in the classification of more close field
The classification and classification of small structure is:
The primary key ID
Big classification
The classification of
The small classification
Pro classification

Answer

Small classification of classification are classified in
In the classification of classification is big classification
Classification of classification is a fixed value 1

Now to be arranged in:

Big classification category 1-1 of 1 small classified the 1-1-1 questions answered
Category 1, category 1 or 2 small classified the 1-2-1 questions answered
Big classification category 1-3 in 1 small classified the 1-3-1 questions answered
Big classification category 2-1 in 2 small classified the 2-1-1 questions answered
Big classification in the classification 2-2 small classified the 2-2-2 questions answered
The 2 big classification 2-3 small classified the 2-3-3 question to answer

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Section two pictures may clear point