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About ER Diagrammer

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The KeepTool ER Diagrammer is not a replacement for high-end CASE tools such as Oracle Designer or ErWin.

However, it is a fast and economical solution that can help you accomplish the following tasks:

Understanding the structure of any existing database within minutes.

Fast reverse-engineering of any existing database

Ready-to-use automatic diagramming

Online data modeling of small systems

The CASE repository is the database itself, i.e. Oracle's Data Dictionary. Thus,  there is no need to re-create the database with a CASE tool.

Data modeling without the risk of losing existing data.