DB RelationalAlgebra vs GITDASH

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.

GitDash is your unified dashboard for exploring GitHub and GitLab profiles and repositories — no sign-in required. MULTI-PLATFORM PROFILES Search any GitHub or GitLab user and see their avatar, bio, company, location, followers, and public repos from a single search bar. ACTIVITY HEATMAP View a GitHub-style contribution heatmap covering the last ~4 months: commits, pull requests, issues, and comments. PDF REPORTS Generate and share a PDF profile report in one tap: followers, repos, top languages, and most-active repository. REPOSITORY EXPLORER Browse any user's public repositories with stars, forks, and last-updated info, and read the full README rendered as rich Markdown — including SVG badges and icons. No accounts, no passwords: everything comes straight from the public GitHub and GitLab APIs.