Data Models into Database Designs A unique, DBMS-supplied identifier used as the primary key of a relation is called a(n): primary key. foreign key. surrogate key. composite key. primary key. foreign key. surrogate key. composite key. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs The DBMS allows surrogate keys to be changed. True False True False ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs In a 1:1 relationship, the primary key placement is arbitrary. 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 main attribute primary key identity key foreign key main attribute primary key identity key ANSWER DOWNLOAD EXAMIANS APP
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 constraints Default value Data type Null status Data constraints Default value Data type ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs When the parent entity is required, a new parent row can always be inserted. True False True False ANSWER DOWNLOAD EXAMIANS APP
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