To design, or redesign, a database of any complexity, the Entity-Relationship modelling tool becomes essential. The specialized tools that have dominated the industry for a long while are expensive and are installed on a workstation. Now that browser technology has progressed so rapidly, the online database modelling tools have become viable and are starting to attract the attention of database de
![Five Online Database Modelling Services - Simple Talk](https://cdn-ak-scissors.b.st-hatena.com/image/square/6fa00c32519031117fb7175bb04987177abe1018/height=288;version=1;width=512/https%3A%2F%2Fwww.red-gate.com%2Fsimple-talk%2Fwp-content%2Fuploads%2Fimported%2F2362-clip_image002.gif)