Introduction to Database System Which of the following indicates the minimum number of entities that must be involved in a relationship? ERD Maximum cardinality Greater Entity Count (GEC) Minimum cardinality ERD Maximum cardinality Greater Entity Count (GEC) Minimum cardinality ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key is a group of one or more attributes that uniquely identifies a row. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A database is called "self-describing" because it contains a description of itself. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Two files may be joined into a third file if None of these they have no records with the same value in the common field both (b) and (c) they have a row in common they have a field in common None of these they have no records with the same value in the common field both (b) and (c) they have a row in common they have a field in common ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which command is used to select distinct subject (SUB) from the table (BOOK)? SELECT DISTINCT SUB FROM BOOK All of these SELECT SUB FROM BOOK None of these SELECT ALL FROM BOOK SELECT DISTINCT SUB FROM BOOK All of these SELECT SUB FROM BOOK None of these SELECT ALL FROM BOOK ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An-owner-member set in the CODASYL specifications may have more than one member but only one occurrence per member All of the listed here only one owner but many owner occurrences only one member but many member occurrence more than one member but only one occurrence per member All of the listed here only one owner but many owner occurrences only one member but many member occurrence ANSWER DOWNLOAD EXAMIANS APP
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