$100 Answer from Many-to- Many This represents a specific modeling situation that you might encounter frequently in database design..
$100 Question from Many-to- Many What is a design pattern?
$200 Answer from Many-to- Many This class contains attributes which are the properties of an association.
$200 Question from Many-to- Many What is an association class?
$300 Answer from Many-to- Many This association has a maximum multiplicity of "*" on both sides.
$300 Question from Many-to- Many What is a many-to-many association?
$400 Answer from Many-to- Many This attribute can be computed from data stored elsewhere in the database; it is shown in UML but not in the relation scheme.
$400 Question from Many-to- Many What is a derived attribute?
$500 Answer from Many-to- Many This table is created to hold the linking attributes (FKs) from both sides of a many-to-many association, whether or not there is an association class.
$500 Question from Many-to- Many What is a junction table?
$100 Answer from Subkeys This is the formal definition of the super key property; if I know the value of set "X" of attributes in a relation, I can uniquely determine the value of set "Y" (as well as X).
$100 Question from Subkeys What is a functional dependency?
$200 Answer from Subkeys This set of attributes is a super key for some, but not all, of the attributes in a relation.
$400 Question from Attribute Attribute What is the UML notation to show a repeating or multi-valued attribute?
$500 Answer from Attribute Attribute You would only do this when the repeated attribute has several attributes of its own You would only do this when the repeated attribute has several attributes of its own.
$500 Question from Attribute Attribute What is show the repeating attribute in its own class?
Final DataBit Keys An outside agency such as a standards body or a government agency has developed this so that we can use it as if it were a descriptive attribute.
Final DataBit What is an external (surrogate) key?
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