Herea€™s a good example ERD using Chen notation:
Crowa€™s chatspin mobile site base
Herea€™s a typical example of the icons combined with the Crowa€™s base notation style. This is actually the style youra€™ll understand the majority of on Database celebrity as ita€™s the only Ia€™m more familiar with. Ita€™s known as a€?crowa€™s foota€™ as symbolization for a many union looks like the base of a crow with its three prongs.
Herea€™s an illustration ERD utilizing Crowa€™s base notation:
Herea€™s a good example of the symbols used with the Bachman notation preferences.
Herea€™s an illustration ERD making use of Bachman notation:
Herea€™s an example of the icons used with the IDEF1X notation preferences.
Herea€™s a good example ERD utilizing IDEF1X notation:
Herea€™s an example of the symbols combined with the Barker notation preferences.
Herea€™s an illustration ERD using Bachman notation:
Conceptual, rational, actual
an Entity union drawing are pulled at three different values: conceptual, sensible, or real. Read more