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(upbeat music)

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- [Instructor] In this challenge,

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you need to do two things to complete our project

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that we started with.

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First, go through one complete sprint

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from requirement to release

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to implement Track Nutrition use case,

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and then, run through another sprint

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to refactor your code and design based

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on the design suggestions I made in my previous lesson.

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This essentially means creating a data layer

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and splitting the DAO class into multiple DAOs

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to lower coupling and increase cohesion.

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Once you are done, check out my solution in the next video.