SQL Editor!

MySQL Workbench is a unified visual tool for database architects, developers, and DBAs. MySQL Workbench provides data modeling, SQL development, and comprehensive administration tools for server configuration, user administration, and much more. MySQL Workbench is available on Windows, Linux and Mac OS.

The SQL Power Architect data modeling tool was created by data warehouse designers and has many unique features geared specifically for the data warehouse architect. It allows users to reverse-engineer existing databases, perform data profiling on source databases, and auto-generate ETL metadata.

SAP PowerDesigner: Enterprise Architecture tools for digital transformation successPlan and manage complex business transformation initiatives with SAP PowerDesigner. The software’s data modeling tools let you build a blueprint of your current enterprise architecture and visualize the impact of change before it happens. Automatically capture architecture layers and requirements, tap into a powerful metadata repository, and share discoveries with your team.

DBDesigner 4 is a visual database design system that integrates database design, modeling, creation and maintenance into a single, seamless environment.

Free visual data modeling inspection tool for most popular one-way reverse-engineered relational databases. With a generic graphical interface, and auto-generated detailed, structural, relationships, simple, graph or topological models. Expanded, collapsed, minimized or transparent shapes. Chain relationships, custom joins and aliases, to enhance your model without altering the database itself.