Tablewright vs DB RelationalAlgebra

The SQLite database tool with no account and no subscription - just your data, on your device. Tablewright is the native database editor developers have been waiting for. Open any SQLite database, browse tables, run SQL queries, and edit data — all with a fast, fluid, offline interface. OPEN ANY DATABASE • Open .sqlite, .db, and .sqlite3 files from Files or other apps • Recent databases for quick access • Works with any SQLite database, no size limits BROWSE YOUR DATA • View all tables with row counts at a glance • Sort, filter, and paginate through any table • Tap rows to see complete details • Navigate foreign key relationships instantly INSPECT YOUR SCHEMA • View columns, types, and constraints • Browse indexes and foreign keys • Copy column definitions and CREATE TABLE statements PRO FEATURES Unlock the full toolkit with a one-time purchase: • Write SQL queries with syntax highlighting • Edit data directly — insert, update, delete rows • Edit cells inline from query results • Create and modify table schemas • Import data from CSV and JSON • Export results as CSV or JSON • Save and organize your favorite queries VIEW & MANAGE IMAGES • View images stored in BLOB columns — JPEG and PNG detected automatically • Upload photos from your camera or library • Share or download images directly from any cell BUILT FOR DEVELOPERS • Native SwiftUI — fast and fluid on all devices • Tablet optimized with sidebar navigation • No account required — everything stays on your device • No external dependencies — pure SQLite, no cloud sync PERFECT FOR • Mobile developers inspecting app databases • Data analysts exploring datasets on the go • Students learning SQL • DBAs and engineers who work with SQLite files One purchase. No subscription. Your database, always yours.

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.