The data pumper is the database tool!
... a Java command line program to copy data from a database or text file into a database / text file (with optional mailing).
Make a select on Database-A and a update on Database-B, or execute a SQL statement.
For IBM i (AS400) users is also a CL-Command included.
A tool that parses SQL Select statements and generates a diagram. The diagram shows parts of the underlying SQL directly in the diagram. For example x=30 , GROUP BY (year), HAVING MIN(age) > 18. It is easy to see cartesian joins and/or loops.