Write a letter to your cousin sharing your experience with him/her about your online classes and online tests. Write how you are coping up with this new method of teaching and ask him/her to write how his/her classes are being conducted.
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Data independence is the type of data transparency that matters for a centralized DBMS. It refers to the immunity of user applications to changes made in the definition and organization of data. ... There are two types of data independence: physical and logical data independence.
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