Generally, it looks correct, but for large applications to be efficient, this type of data structure should be divided into the smallest parts so as not to duplicate fields, and bring the database up to 3 normal form. So, for example, create a model of a table containing expenditure on a given day without distinguishing whether it is a Monday, Tuesday or Wednesday, but having a specific date so that it is possible to determine whether the entry from the table concerned the data from Tuesday or on Saturday.
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