Question

我正在尝试构建一个小型社交网络，我想向我的用户提供控制其数据可见性/隐私的能力，就像Facebook一样...

例如，他们可以制作他们的数据（ Pseudo，City，Birthday，Gender，... ）私人，公开或 OnlyFriends ...

我已经构建了用户表：user，user_profiles，...

create table user(
    id int unsigned not null auto_increment,
    pseudo varchar(64) not null,
    password char(64) not null,
    lname varchar(48) not null,
    fname varchar(48) not null,
    gender char(1) not null,
    --Other fields
    primary key(id),
    unique(pseudo)
);

create table user_profile(
    uid int unsigned not null,
    birthday date,
    phone varchar(15),
    address varchar(255),
    city varchar(64),
    postal_code varchar(10),
    -- ... Other fields
);

为了存储这些可见性数据我试过这个：

create table data_visibility(
    id smallint unsigned not null auto_increment,
    name char(15) not null,
    primary key(id),
    unique(name)
);

create table user_visibility(
    uid int unsigned not null,
    pseudo smallint not null,
    lname smallint not null,
    fname smallint not null,
    email smallint not null,
    gender smallint not null,
    birthday smallint not null,
    -- ... Other fields
    primary key(uid),
    foreign key(uid) references user(id) on delete cascade on update cascade,
    foreign key(pseudo) references data_visibility(id),
    foreign key(lname) references data_visibility(id),
    foreign key(fname) references data_visibility(id)
    -- ... Other foreigns
);

但是我对这个解决方案不满意如果我通过添加新字段来更改用户表，我还需要更新user_visibility字段，所有这些外键看起来都很奇怪......

程序员通常会做些什么来解决这个问题？

如何在数据库

0 个答案: