Linea Agents vs DB RelationalAlgebra

Linea puts your Mac's coding agents in your pocket. Pair with your Mac running Linea, then watch and steer every terminal and AI agent from your phone — live. See what each agent is doing, read its plan and diffs, approve or deny its actions, and reply when it needs you. Start new agents or shells, resume past sessions, and jump between projects — all over a private, direct connection to your own Mac. WHAT YOU CAN DO • Live agent conversations — follow tool calls, plans, and diffs as they happen • Warp-style terminal blocks — run commands and read the output • Approve, deny, or answer your agents from anywhere • Start new agents (Claude Code, Codex, and more), shells, or git worktrees • Search your history and resume past sessions • Instant Home from a cached snapshot, even before the link reconnects PRIVATE BY DESIGN Linea connects peer-to-peer straight to your Mac — your code and conversations never touch our servers. No account required. Requires the Linea app on your Mac. New here? Tap "Explore a demo" to try the whole app on sample data — no Mac needed.

A native iPad and iPhone app that converts a SQL query typed, pasted, or imported from a .sql file into relational algebra, tuple relational calculus and domain relational calculus. Each notation gets a step by step derivation, a final oneline formula, and an interactive diagram an operator tree for the algebra, a quantifier scope tree for the calculus and a fourth view stacks all three against the same query. Whatever SQL asks for that a notation cannot express exactly is reported rather than quietly approximated.