Introduction to Database System Which type of entity represents an actual occurrence of an associated generalized entity? Archetype entity Instance entity Subtype entity Supertype entity Archetype entity Instance entity Subtype entity Supertype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Each of data files has a _____ that describe the way the data is stored in the file. Records Database Fields File structure Records Database Fields File structure ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The functional dependency R → S means that the value of S can be determined when we are given a value of R. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The physical location of a record is determined by a mathematical formula that transforms a file key into a record location in a tree file an indexed file None of these a sequential file a hashed file a tree file an indexed file None of these a sequential file a hashed file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The designer of a form includes prompts both (a) and (b) filed designators None of these data prompts both (a) and (b) filed designators None of these data ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A top-to-bottom relationship among the items in a database is established by a All of the listed here Hierarchical schema Relational schema Network schema All of the listed here Hierarchical schema Relational schema Network schema ANSWER DOWNLOAD EXAMIANS APP
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