The research thus is focusing on the integrity of the database. We adapt the methods of database value-added including imputation, sampling, and model-evaluating for enlarging the information contained while leave the data structure unmodified. In this paper, the purpose is comparing the structure of database with value-added. As the result of different value-added method on model building, we derive the following conclusion. First, the database structure is more closer to the origin data given regression analysis as the main imputation method. Second, system sampling has better performance than simple random sampling if adapting further sampling for reducing the amount of data. Third, in the process of the C5.0 decision tree and neuron network algorithm as the main imputation method, the data is also closer to the origin data when enlarge it. After experimental result, we find the better value-added method is not consistent in different model. Comparing with non-imputated database, database with value-added has larger information and is closer to original data structure.