DBArtisan is more management tool, you can get special add-in for development process, but...
So do you need management tool or development tool? Also what platform? Cheap tools usually do very limited work.
check www.quest.com - they have tools for management, development and monitoring. If you use Oracle, their TOAD is a must!
for MS SQL development is not bad MS Visual Studio Ent.
if you want something super cheap, try http://www.indus-soft.com/winsql - I use their free version for quick queries into many datasources....
or some freeware.... nothing special....
for MS SQL http://www.laplas-soft.com
for ORACLE http://www.sqltools.net
jiri