Data Models into Database Designs A unique, DBMS-supplied identifier used as the primary key of a relation is called a(n): surrogate key. foreign key. composite key. primary key. surrogate key. foreign key. composite key. primary key. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs For every relationship, how many possible sets of minimum cardinalities are there? Four Three Six Two Four Three Six Two ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Each entity is represented as a(n): tuple. attribute. table. file. tuple. attribute. table. file. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs All primary keys are required. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs In a 1:1 relationship, the foreign key is placed in: the child table. the parent table. either the parent table or the child table. either table without specifying parent and child tables. the child table. the parent table. either the parent table or the child table. either table without specifying parent and child tables. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which constraint requires that the binary relationship indicate all combinations that must appear in the ternary relationship? MUST COVER MUST NOT None of these Both of the above MUST COVER MUST NOT None of these Both of the above ANSWER DOWNLOAD EXAMIANS APP
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