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One user affects all other users


Set permissions on all objects for SQL usersHow to use a relational database to store all users who belong to a group, and all groups which a user belongs to?Two different ON DELETE paths, how do I need to change the schema?Best way to model a single user with multiple usernamesIs there a design model for tracking processes done to an item?How to have a one-to-one relation to either one of two other tablesOrganizing Relational Database Logical Model with Varying CategoriesHow to improve query performance through denormalization of this schema or other techniques?Joining ~ 40 normalized tables for 200 columns to display detailed user profile. Can this be optimized?I have one table for users, one for a collection of games. My users can own one or many games. How do I structure that in my database?






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}







0















I'm completely new to working with databases (other than retrieving data from them as a front end developer.) and have an idea I was toying with. However, I'm struggling to find exactly what to Google due to my lack of knowledge of DBs and the terminology surrounding them.



I have a database that houses user's ratings of various items. One user can have one rating per item and can rate as many different items as they want. The goal would be to find other users who have similar items rated similar ratings and use their data to recommend new things to the first user. This means any single rating has some level of reach to every user in the database. (A similarity score of some kind). I.e. when I say I like item 1, the ratings of anyone else who liked item 1 are now of higher value to me. And anyone who didn't like it, their ratings are of lesser value to me.



I know for sure people do these things (Netflix, Amazon, Google) but I'm honestly not sure where to begin learning how. Any tips are appreciated.









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josh roberts is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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    0















    I'm completely new to working with databases (other than retrieving data from them as a front end developer.) and have an idea I was toying with. However, I'm struggling to find exactly what to Google due to my lack of knowledge of DBs and the terminology surrounding them.



    I have a database that houses user's ratings of various items. One user can have one rating per item and can rate as many different items as they want. The goal would be to find other users who have similar items rated similar ratings and use their data to recommend new things to the first user. This means any single rating has some level of reach to every user in the database. (A similarity score of some kind). I.e. when I say I like item 1, the ratings of anyone else who liked item 1 are now of higher value to me. And anyone who didn't like it, their ratings are of lesser value to me.



    I know for sure people do these things (Netflix, Amazon, Google) but I'm honestly not sure where to begin learning how. Any tips are appreciated.









    share







    New contributor




    josh roberts is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























      0












      0








      0








      I'm completely new to working with databases (other than retrieving data from them as a front end developer.) and have an idea I was toying with. However, I'm struggling to find exactly what to Google due to my lack of knowledge of DBs and the terminology surrounding them.



      I have a database that houses user's ratings of various items. One user can have one rating per item and can rate as many different items as they want. The goal would be to find other users who have similar items rated similar ratings and use their data to recommend new things to the first user. This means any single rating has some level of reach to every user in the database. (A similarity score of some kind). I.e. when I say I like item 1, the ratings of anyone else who liked item 1 are now of higher value to me. And anyone who didn't like it, their ratings are of lesser value to me.



      I know for sure people do these things (Netflix, Amazon, Google) but I'm honestly not sure where to begin learning how. Any tips are appreciated.









      share







      New contributor




      josh roberts is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      I'm completely new to working with databases (other than retrieving data from them as a front end developer.) and have an idea I was toying with. However, I'm struggling to find exactly what to Google due to my lack of knowledge of DBs and the terminology surrounding them.



      I have a database that houses user's ratings of various items. One user can have one rating per item and can rate as many different items as they want. The goal would be to find other users who have similar items rated similar ratings and use their data to recommend new things to the first user. This means any single rating has some level of reach to every user in the database. (A similarity score of some kind). I.e. when I say I like item 1, the ratings of anyone else who liked item 1 are now of higher value to me. And anyone who didn't like it, their ratings are of lesser value to me.



      I know for sure people do these things (Netflix, Amazon, Google) but I'm honestly not sure where to begin learning how. Any tips are appreciated.







      database-design





      share







      New contributor




      josh roberts is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.










      share







      New contributor




      josh roberts is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.








      share



      share






      New contributor




      josh roberts is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      asked 1 min ago









      josh robertsjosh roberts

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      New contributor




      josh roberts is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.





      New contributor





      josh roberts is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      josh roberts is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






















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