Data Models into Database Designs Which of the following column properties specifies whether or not cells in a column must contain a data value? Null status Data type Data constraints Default value Null status Data type Data constraints Default value ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs A unique, DBMS-supplied identifier used as the primary key of a relation is called a(n): composite key. foreign key. surrogate key. primary key. composite key. foreign key. surrogate key. primary key. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which is not true about surrogate keys? They are numeric. They are fixed. They have meaning to the user. They are short. They are numeric. They are fixed. They have meaning to the user. They are short. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs For every relationship, how many possible types of actions are there when enforcing minimum cardinalities? Six Four Two Three Six Four Two Three ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs An intersection table is required to represent M:N relationships. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs When transforming an entity-relationship model into a relational database design, each entity is represented as a table. True False True False ANSWER DOWNLOAD EXAMIANS APP
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