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So, we connected our application
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with the database using Mongoose in the last lecture.
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But wait, what actually is Mongoose?
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Well, Mongoose is an object data modeling library
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for MongoDB and Node JS,
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providing a higher level of abstraction.
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So, it's a bit like the relationship
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between Express and Node,
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so Express is a layer of abstraction over regular Node,
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while Mongoose is a layer of abstraction
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over the regular MongoDB driver.
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And by the way, an object data modeling library
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is just a way for us to write JavaScript code
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that will then interact with a database.
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So, we could just use a regular MongoDB driver
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to access our database, and it would work just fine,
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but instead we use Mongoose,
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because it gives us a lot more functionality out of the box,
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allowing for faster and simpler development
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of our applications.
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So, some of the features Mongoose give us
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is schemas to model our data and relationship,
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easy data validation, a simple query API,
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middleware, and much more.
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In Mongoose, a schema is where we model our data,
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so where we describe the structure of the data,
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default values, and validation.
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We then take that schema and create a model out of it.
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And the model is basically a wrapper
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around the schema, which allows us to actually interface
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with the database in order to create, delete, update,
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and read documents.
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All right, so this was just a very quick introduction.
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Now, let's actually go ahead
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and create a simple schema and model.
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