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Editorial Team
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Asked: 2026-06-13T08:01:22+00:00

I am developing a recommendation engine, so that requires storing lots of data and

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I am developing a recommendation engine, so that requires storing lots of data and keeping track of every move made by the user. So, basically my website is a product search engine and will be having sets of queries as users data. Following are some examples of the data set

Example

User1 :
1. Apple Ipod tOuch
2. Samsung Galaxy Ace Plus
3. HArry Porter 

User2 :
1. Product1
2. Product2

and so on.

One way(naive) could be having an ID associated with each of my users and then having a string corresponding to that ID which will be of this form(strings separated with ~) :-

Unique ID - Apple IPod TOuch~Samsung Galaxy Ace Plus~HArry Porter

But this method won’t be efficient considering how I would be playing with those data later on.

Can any one come up with a very efficient model fairly easily implementable in mysql ?

Comment if I am unclear in asking my doubt.

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1 Answer

  1. Editorial Team

    The classic design is a table for users :

    Users(user_id,user_name,reg_date....)

    table for products :

    Products(prod_id,prod_name,prod_cost....)

    table with mapping user–>products :

    User_products(user_id,prod_id ....)

    Example :

    Users :

    user_id|user_name
1200   | User1 
7856   | User2

    Products :

    prod_id | prod_name
12900   | Apple Ipod tOuch
45673   | Samsung Galaxy Ace Plus
99876   | HArry Porter 
34590   | Product1
56283   | Product2

    User_products :

    user_id | prod_id
1200    |12900
1200    |45673
1200    |99876
7856    |34590
7856    |56283
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