These actions indicate the multiplicity of the source and target types as well as the navigability from the source object, either bidirectional or unidirectional.
这些操作表明了来源及目标类型的多样性,以及资源对象的导航性,或者双向,或者单向。
If you would like to change the relationship name or the navigability of one of the relationship roles you can select one of the EJB class shapes and select Open from the context menu.
Internet has been integrating global information resources, which leads to the appearance of so-called 「information ocean」 and promotes the tendency of navigability in art appreciation.