damri :
How should database store whos liked a certain post, should I have a seperate table which keeps tracks of all likes, and keeps every like of every post together, storing article_id, user_id, and like/dislike? Thanks!
GMB :
You are describing a N-M relationship between users and posts, where each user might ligke serveral posts and each post can be liked by several users.
I would recommend using a bridge table, with foreign keys refering the posts and users tables.
In a nutshell, that would look like:
table: users
user_id
name
...
table: posts
post_id
title
...
table: users_like_posts
user_id -- foreign key to users(user_id)
post_id -- foreign key to posts(post_id)
like_dislike
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