Answer to Question #75639 in Databases | SQL | Oracle | MS Access for Jonny
a composite attribute.
a simple attribute.
a simple key.
A simple identifier consists of one attributе and uniquely identifies an instance of the entity. When mapping a Conceptual Model to a Relational Model, a simple identifier maps to a simple key. Simple key consists of one column and uniquely identifies a row.
Need a fast expert's response?Submit order
and get a quick answer at the best price
for any assignment or question with DETAILED EXPLANATIONS!