Data Models into Database Designs In 1:N relationships, which entity becomes the parent entity is arbitrary. False True False True 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 A primary key should be defined as: NOT NULL. None of these NULL. Either of the above can be used. NOT NULL. None of these NULL. Either of the above can be used. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs If a relationship has a cascade updates constraint, then if ________ in the parent table is changed, then the same change will automatically be made to any corresponding foreign key value. a foreign key any alternate key a surrogate key the primary key a foreign key any alternate key a surrogate key the primary key ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which of the following situation requires the use of ID-dependent entities? Association relationships only Archetype/instance relationships only Multivalued attributes only All of these Association relationships only Archetype/instance relationships only Multivalued attributes only All of these ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which is not true about surrogate keys? They are numeric. They are short. They have meaning to the user. They are fixed. They are numeric. They are short. They have meaning to the user. They are fixed. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS