Introduction to Database System In a relation, the columns are sometimes called "attributes". False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An indexing operation establishes an index for a file sorts a file using a single key sorts file using two keys None of the listed here establishes an index for a file sorts a file using a single key sorts file using two keys None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity represents a logical generalization whose actual occurrence is represented by a second, associated entity? Instance entity Subtype entity Supertype entity Archetype entity Instance entity Subtype entity Supertype entity Archetype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Two files may be joined into a third file if both (b) and (c) they have a row in common None of these they have a field in common they have no records with the same value in the common field both (b) and (c) they have a row in common None of these they have a field in common they have no records with the same value in the common field ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is not true of the traditional approach to information processing? All of these Programs are dependent on the files It is inflexible It is file-oriented There is common sharing of data among the various applications All of these Programs are dependent on the files It is inflexible It is file-oriented There is common sharing of data among the various applications 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
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