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 Queries to a database both (a) and (b) can use aggregate functions like SUM and COUNT are written in English None of these All of these both (a) and (b) can use aggregate functions like SUM and COUNT are written in English None of these All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An indexing operation None of the listed here sorts a file using a single key sorts file using two keys establishes an index for a file None of the listed here sorts a file using a single key sorts file using two keys establishes an index for a file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A candidate key is a determinant that determines all the other columns is a relation. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Relationship classes are associations between entity classes. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Two files may be joined into a third file if they have no records with the same value in the common field they have a row in common they have a field in common both (b) and (c) None of these they have no records with the same value in the common field they have a row in common they have a field in common both (b) and (c) None of these ANSWER DOWNLOAD EXAMIANS APP
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