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 Data constraints Default value Null status Data type Data constraints Default value Null status ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs An intersection table is required to represent M:N relationships. True False True False 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. primary key. surrogate key. foreign key. composite key. primary key. surrogate key. foreign key. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Each entity is represented as a(n): file. table. attribute. tuple. file. table. attribute. tuple. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs For every relationship, there are six possible sets of minimum cardinalities. True False True False ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which is not true about surrogate keys? They are fixed. They have meaning to the user. They are numeric. They are short. They are fixed. They have meaning to the user. They are numeric. They are short. ANSWER DOWNLOAD EXAMIANS APP
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