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what do the arrows in datamodeler relationship lines mean?

sun_certifiedMay 26 2010 — edited May 28 2010
hello forum,

what do the arrows at the end of these relationship lines mean?

i'm referring to the one arrowhead - opposite of the crow's feet - that points to the "Warehouses" entity in this diagram. and the other three arrowheads that point to the "Product_Information" entity.

I understand ERDs and cardinality in general. I know what Barker Notation is.

I know that the "crow's feet" are the "many" side of a "N:many" relationship. and i already know that a line without an arrowhead represents the "1" side of a "1:N" relationship. But the only thing i can find in the datamodeler documentation that mentions arrowheads, is a reference to "Foreign Key Arrow Direction" in the Oracle SQL Developer Online Help:

"Foreign Key Arrow Direction: Controls whether arrowhead points toward the primary key or the foreign key in foreign key relationship arrows."

Is that referring to those arrowheads in this diagram?

Thanks in advance for your help.

many thanks,
sun-certified
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Locked on Jun 25 2010
Added on May 26 2010
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