Data Models into Database Designs For every relationship, how many possible types of actions are there when enforcing minimum cardinalities? Three Two Six Four Three Two Six Four ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which constraint requires that the binary relationship indicate all combinations that must appear in the ternary relationship? MUST NOT Both of the above None of these MUST COVER MUST NOT Both of the above None of these MUST COVER ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs A foreign key is: used to define null status. a column containing the primary key of another table. used to define data types. All of these used to define null status. a column containing the primary key of another table. used to define data types. All of these ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which of the following situation requires the use of ID-dependent entities? All of these Archetype/instance relationships only Multivalued attributes only Association relationships only All of these Archetype/instance relationships only Multivalued attributes only Association relationships only ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs A primary key should be defined as: NOT NULL. NULL. Either of the above can be used. None of these NOT NULL. NULL. Either of the above can be used. None of these ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which is not true about surrogate keys? They have meaning to the user. They are short. They are numeric. They are fixed. They have meaning to the user. They are short. They are numeric. They are fixed. ANSWER DOWNLOAD EXAMIANS APP
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