Introduction to Database System Which of the following is not a logical data-base structure? network tree relational chain network tree relational chain ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A recursive relationship is a relationship between an entity and ________ . an archetype entity itself a subtype entity an instance entity an archetype entity itself a subtype entity an instance entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A logical schema describes how data is actually stored on disk All of these is a standard way of organizing information into accessible parts is the entire database None of these describes how data is actually stored on disk All of these is a standard way of organizing information into accessible parts is the entire database None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System All instances of an entity class have the same attributes. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Periodically adding, changing and deleting file records is called file renewing Updating restructuring upgrading renewing Updating restructuring upgrading ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a relation, the columns are sometimes called "attributes". True False True False ANSWER DOWNLOAD EXAMIANS APP
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