DBC vs Skeema

DBC is a free, open-source command-line tool for comparing database schemas across versions, environments, or database systems. Built with Go, it captures schema snapshots and checks tables, columns, indexes, foreign keys, and constraints for changes. It supports MySQL, PostgreSQL, SQL Server, Oracle, and SQLite. Optional data checksums can reveal data modifications, while exact row counts are enabled by default. Results can be output as text, JSON, or HTML. Database drivers run as separate executables and communicate with the core application over JSON-RPC through standard input and output; the README notes that drivers use timeouts but makes no certification or compliance claim. Building the core and drivers from source with Make is the documented installation route. DBC is licensed under MIT and is listed for Linux, macOS, and Windows. The releases page lists v0.1.0-alpha as a pre-release. CI/CD examples, Docker support, migration script generation, and a web UI appear on the roadmap, not among the available features.

Skeema is a declarative, SQL-based schema management utility for applying repository changes to MySQL and MariaDB tables and routines. It generates SQL DDL from schema files and provides diff, lint, push, and pull commands. Configurable linter rules identify unsafe changes, and Skeema verifies generated ALTER TABLE statements in a workspace before proceeding. For online schema changes, it supports database-native alterations and external tools including pt-online-schema-change and gh-ost, with execution configurable by environment and table size. Schema directories can map to multiple servers or schemas, and the utility can detect drift across shards. Listed compatibility includes MySQL 5.5–9.7, MariaDB 10.1–12.3, and Percona Server; AWS Aurora MySQL 5.7–8.4 is listed for Premium. Skeema Cloud Linter can provide automatic diff and lint output for related GitHub commits. All editions can use SSL/TLS, while Premium adds client certificates, CA verification options, and SSH tunnels. The Community plan is free at free. Plus costs $124 a month and Max costs $499 a month.