First Steps in SQLDeveloper Data Modeler

It’s true, Oracle are giving away free stuff. “Oracle ?”, I hear you say, “as in Larry’s Database Emporium and Cloud base ?” The very same.
It’s been going on for quite a while and includes relatively hidden gems such as SQLDeveloper Data Modeler.

There is some confusion around this particular tool for a couple of reasons.
When it was first released (sometime around 2009 as I recall), Data Modeler was an additional cost option. However, that didn’t last long.
At present (and for a number of years now), it is available either as a completely standalone tool, or as a fully integrated component of the SQLDeveloper IDE.
Either way, it costs exactly the same as the SQLDeveloper IDE – i.e. nothing.

I can tell you like the price, want to take it for a spin ?

I’m going to focus here on using the integrated version of Data Modeler. This is because

  • I want to use it for small-scale modelling of the type you might expect to find when using an Agile Methodology
  • I’m a developer and don’t want to leave the comfort of my IDE if I don’t need to

What I’m going to cover is :

  • Viewing a Table Relationship Diagram (TRD) for an existing database table
  • Creating a Logical Data Model and Entity Relationship Diagram (ERD)
  • Generating a physical model from a logical model
  • Generating DDL from a Physical Model (including some scripting tweaks to suit your needs)
  • Using a Reporting Schema and pre-canned SQLDeveloper Reports to explore your models

Disclaimer
This post is about introducing the features of Data Modeler in the hope that you may find them useful.
It’s not intended as a paragon of data modelling virtue.
Come to that, it’s not intended as a definitive guide on how to use this tool. I’m no expert with Data Modeler (as you are about to find out). Fortunately, there are people out there who are.
If, after reading this, you want to explore further, then you could do worse than checking out words of Data Modeler wisdom from :

Let’s get started…

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