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We know how code for loading data needed for our application and this day US during the day after class

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basically in real world this would mean that we have a database with some data.

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Now the next step would be to write some code to fetch this data.

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For that we need that dollar.

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So it's the there that communicates with database and so it includes some obscure queries.

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But since we're not dealing with D-W at this point we cannot how obscure queries but our dog classes

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will instead use that get Admetus in their data store class.

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So let's go ahead and write two simple doffs user doubt and bookmark.

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And these dolls will in good methods get users and get bookmarks which will in will get users and get

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bookmarks methods and the data stored us so let's create a package what our doffs

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.

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So that's the new package for dot com dot semantics they are truly are.

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And first let's create user Dao

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so let's add the get user methods get users matter within this dog

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.

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So typically this would include since it's a door it would include that as well cories.

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But since we don't have a screen at this point so we will just invoke we'll just invoke the get users

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method and the data store store

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import user.

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Now let's create a bookmark doe with get bookmarks mattered

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and it would in invoke

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similar method within the get in it in the store.

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So it's got bookmarks and ingredients

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needs to be two dimensional.

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So that's the bookmarks dot next let's right get users and get bookmarks in our manager process and

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they will in intern in the dormitory that we just wrote the methods that we are going to write in the

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Manager class can be invoked from the controller.

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So we just go there.

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This is how MVC works where controllers really work.

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Managers and managers in Dunwell in work doffs.

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So let's go ahead and simply add these methods get users and get good marks in our manager process.

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So first let's open the User Manager class.

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From here we are going to work the door there that is their door class.

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So let's just say I read static dolls since this is user management.

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We need to invoke the user now.

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So let's create an instance of this here

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or

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so this would simply invoke

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got users.

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So all it is doing is just relaying the call.

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So that's it really does work and it's going to book manager.

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And similarly let's instantiate a bookmark down here

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so

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you can go the bookmark down

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.

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So add credence

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bookmark two dimensional array or this

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and that's it.

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So we created the Darlie are the user now under bookmark.

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And these are the classes with which the data from our data are stored on there and done in work from

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User Manager and bookmark manager.

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So all on these two classes are doing is they're simply relaying the calls and they will be invoked

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from other leaders like the controller layer.

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And that's about it.