Data Models into Database Designs Which of the following column properties specifies whether or not cells in a column must contain a data value? Data type Default value Data constraints Null status Data type Default value Data constraints Null status ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs A foreign key is: All of these a column containing the primary key of another table. used to define null status. used to define data types. All of these a column containing the primary key of another table. used to define null status. used to define data types. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs For every relationship, there are six possible referential integrity actions. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which of the following situation requires the use of ID-dependent entities? Association relationships only Multivalued attributes only Archetype/instance relationships only All of these Association relationships only Multivalued attributes only Archetype/instance relationships only All of these 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. True False True False ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs The identifier of an entity will become the ________ of the new table. foreign key primary key main attribute identity key foreign key primary key main attribute identity key ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS