Within the context of social media and online communities, User, Community, Comment, and Review constitute the core interactive framework. This ER diagram detaily explains how these entities connect and influence each other, forming a complex network of interactions from user-posted content to community reactions, and further to comments and reviews by other users. This analysis is crucial for social platform operators, aiding them in better understanding user behavior, monitoring community health, and timely adjusting content strategies to foster a positive and healthy communication environment. Moreover, in-depth analysis of review data can also lead to improvements in products or services, further enhancing user satisfaction and loyalty.