Data Models into Database Designs All primary keys are required. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which of the following columns is(are) are required in a table? A surrogate key A primary key A foreign key An alternate key A surrogate key A primary key A foreign key An alternate key ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs A primary key should be defined as: None of these NOT NULL. Either of the above can be used. NULL. None of these NOT NULL. Either of the above can be used. NULL. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Cascading updates refers to child rows being automatically deleted when a parent row is deleted. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs A foreign key is: All of these used to define null status. used to define data types. a column containing the primary key of another table. All of these used to define null status. used to define data types. a column containing the primary key of another table. 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
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