Introduction to Database System A minimum cardinality is the minimum number of entity instances that may participate in a relationship instance. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is not characteristic of a relational database model? treelike structure complex logical relationships tables records treelike structure complex logical relationships tables records ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An attribute is a(n): key of a table. two dimensional table. column of a table. row of a table. key of a table. two dimensional table. column of a table. row of a table. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to select only one copy of each set of duplicable rows SELECT UNIQUE None of these SELECT DIFFERENT All of these SELECT DISTINCT SELECT UNIQUE None of these SELECT DIFFERENT All of these SELECT DISTINCT ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An attribute that names or identifies entity instances is a(n): attribute. entity. identifier. relationship. attribute. entity. identifier. relationship. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The degree of a relationship refers to the number of entity classes in the relationship. True False True False ANSWER DOWNLOAD EXAMIANS APP
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