Lets define Link with any of below points , but should not contradict any of them:
- A Link
defines the relationship between Business Components.
- Links
are used to define a Business Object; the relationships between the
primary Business Component and other (child) Business Components in the
Business Object are Links.
- A Link
is not the same thing as a Multi-Value Link or a Multi-Value Group, but
the definition of a Multi-Value Link does include a Link.
- A
one-to-many Link makes a master-detail View possible.
- Links
are defined on the Business Object layer, using Business Component Fields
rather than Table Columns, although many-to-many links use Table and
Column names to define the intersection table.
- The
"Source" Field is on the Parent Business Component, while the
"Destination" Field is on the Child Business Component.
- A Link
can have a Search Specification.