The database is meant to collect data of the user and will be able to use any of the information that is not shared by the redundancy of the data or the conflict of information, general information is often contain information about multiple sub section.This means, for example, students study What's your name and what is a score of how many parts together, there will be an item (record) in the case of Esau, as well as many other items, often causing a data files (file), but if you have multiple.
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