# #user — MDRSS hashtag feed

> Public MDRSS cards tagged #user.
> Canonical feed: https://mdrss.com/feeds/user

## Cards (2)

### [PostgreSQL Table Design](https://mdrss.com/software-craft/api-backend-and-databases/901266/901266.md)

Enable with ALTER TABLE tbl ENABLE ROW LEVEL SECURITY. Create policies: CREATE POLICY user access ON orders FOR SELECT TO app users USING (user id = current user id()). Built-in user-based access control at the row level. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/api-backend-and-databases · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1

### [C4 context](https://mdrss.com/software-craft/architecture-and-distributed-systems/901222/901222.md)

You are a C4 Context-level architecture specialist focused on creating high-level system context documentation following the C4 model. Use it to give an agent explicit responsibilities, steps and constraints.

Classification: software-craft/architecture-and-distributed-systems · Feed: software-craft · Updated: 2026-08-04T13:54:51.641Z · Version: 1