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Cường Nguyễn Hữu
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Cường Nguyễn HữuBeginner
Asked: February 3, 20222022-02-03T11:10:09+00:00 2022-02-03T11:10:09+00:00In: SQL

Thiết kế db ứng dụng chat

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Chào mọi người. Em vừa thiết kế db ứng dụng chat. Gồm các chức năng chính:
Đăng nhập, đăng xuất khỏi 1 hoặc nhiều thiết bị, đăng ký
Gửi otp để reset mật khẩu, thay đổi thông tin cá nhân
Thêm người vào nhóm, gửi yêu cầu kết bạn
Thay đổi tên trong đoạn chat
Nhắn tin 1-1, 1-n
Xem ai đã xem tin nhắn
….
Mong mọi người đóng góp ý kiến để em hoàn thiện bài tập lớn trên trường ạ. Thiết kế hiện tại của em là:

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  1. tvd12 Enlightened
    2022-02-03T11:15:29+00:00Added an answer on February 3, 2022 at 11:15 am

    Đối với thiết kế cơ sở dữ liệu cho chat thì bảng Message phải là trung tâm, và hiện tại trong thiết kế của em có vấn đề đó là nó chỉ phục vụ được chat cho 2 người, còn chat nhóm thì chịu. Vì em đã để mỗi quan hệ là: 1 người (sender_id) chỉ gửi 1 tin nhắn (message_id) cho 1 người (contact_id). Như vậy việc mở rộng hệ thống về sau này sẽ khó khăn khi em cần chat group.

    Có 1 cách đơn giản nhất là em bổ sung channel_id, tức là bây giờ việc chat sẽ chia thành các kênh, và bảng message sẽ kiểu này:

    Message(id, channel_id, content…)

    Anh có viết 1 bài về thiết kế cơ sở dữ liệu cho chat, em có thể tham khảo nhé.

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