Database Diagram Tool: DbSchema
DbSchema is a diagram-oriented database tool compatible with all relational and many NoSQL databases, including MySQL, Cassandra, PostgreSql, MongoDb, Redshift, SqlServer, Azure, Oracle, Teradata and more.
Using DbSchema, you can design the schema with or without a database, save the design as project file, deploy schema on multiple databases and share the design in a team. Build-in tools allows to visually explore the database data, build and execute queries, generate random data, build forms applications or reports and more.
DbSchema can be evaluated for 15 days for free, with no registration required. It's available in 3 flavors: Academic (for educational purposes) at $63, Personal (for individual developers, administrators) at $127, and Commercial (for companies) at $197.