Data Models into Database Designs Which of the following columns is(are) are required in a table? A foreign key A primary key An alternate key A surrogate key A foreign key A primary key An alternate key A surrogate key ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs When the child entity is required, we are restricted from creating a new parent row without also creating a corresponding child row at the same time. False True False True 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? Both of the above MUST COVER None of these MUST NOT Both of the above MUST COVER None of these MUST NOT ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs When the parent entity is required, cascading updates and cascading deletions should be allowed or the associated actions on the parent should be prohibited. True False True False ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs In a 1:1 relationship, the primary key placement is arbitrary. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Each entity is represented as a(n): attribute. file. tuple. table. attribute. file. tuple. table. ANSWER DOWNLOAD EXAMIANS APP
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