Question: Which statements are true about Relational database architectures when compared to flat file systems ( answer all correct answers, there may be more than one

Which statements are true about Relational database architectures when compared to flat file systems (answer all correct answers, there may be more than one):
Responses
They remove duplicate columns
They often make update and editing easier, and less error prone
They are simpler to construct
They provide much faster data access

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