From Help of MyEclipse 4.0M3 ER-Designer Quickstart:
Relationships
A relationship is depicted as a directed, labeled connection between 2 database table entities. The connection’s label is based on the pattern: parentTable(column1,…)= childTable(column1,…) mapping. Next to the relationship label is a direction arrow that points from the parent table to the child table (->). When you fly-over a connection, the foreign key constraint name is displayed. For example the JHIST_JOB_FK constraint is depicted in Figure 6 just below the relation in bright blue text.
BUT no word about hieroglyphs that appeared to be at the *end* of connections:
1) the one is like a crossed-out trident
2) the other is like a trident with a small circle
Please, complete the Help.