A schema of a database system is its structure described in a formal language supported by the database management system (DBMS) and refers to the organization of data to create a blueprint of how a database will be constructed (divided into database tables).

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Database schema for entities with two possible owner/parent types?

I'm using PostgreSQL with Sequelize as my ORM. I have one type, User. The second type is Group, which can have any number of users associated with it through a GroupMemberships table. Users can also ...
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designing server side database to store user-specific data

I have a database with a number of quiz questions and answers. My basic design consists of these two tables questions (question_id, question_string); answers (answer_id, answer_string, ...