![]() Roles are the anchor point within PostgreSQL that determine who authentication and authorization policies apply to. A role can correspond to an individual person in the real world, or it can operate as a group with certain access that other roles can become members of. Instead of having distinct concepts of "users" and "groups", PostgreSQL uses roles to represent both of these ideas. In PostgreSQL, a role is a grouping of a specific set of capabilities, permissions, and "owned" entities. To learn how to change role privileges on specific database objects, check out our guide on role grants. For a more broad overview of how roles fit into the larger picture, take a look at the introduction to authentication and authorization guide. More specifically, this guide will cover role management as it relates to role attributes. This guide will cover what roles are and how to manage them within a PostgreSQL database cluster. They are the persona that user's adopt within the database system, are the entity by which the authentication system accepts or denies connections, and the subject of privilege management rules of all scopes. ![]() PostgreSQL roles are a combination of the ideas of users and groups into a single, flexible entity. Core among these is the concept of roles. PostgreSQL uses various mechanisms to implement authentication, authorization, and object ownership within database clusters. The United States' most popular databases by state going into 2022.Traditional databases vs serverless databases. ![]() Introduction to common serverless challenges.Top 13 serverless computing and database providers.Introduction to database backup considerations.How microservices and monoliths impact the database.Syncing development databases between team members.Troubleshooting database outages and connection issues.What is connection pooling and how does it work?.Top 8 TypeScript ORMs, query builders, & database libraries: evaluating type safety.Top 11 Node.js ORMs, query builders & database libraries in 2022.Introduction to MongoDB Aggregation Framework.Introduction to MongoDB database tools & utilities.Working with dates and times in MongoDB.Introduction to MongoDB connection URIs.How to query and filter documents in MongoDB.How to manage databases and collections in MongoDB.How to manage authorization and privileges in MongoDB.How to manage users and authentication in MongoDB.Introduction to provisioning MongoDB Atlas.How to export database and table schemas in SQLite.How to update existing data with SQLite.How to perform basic queries with `SELECT` with SQLite.Inserting and deleting data with SQLite.Creating and deleting databases and tables with SQLite.An introduction to MySQL column and table constraints.How to create and delete databases and tables in MySQL. ![]()
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