Introduction to Database System In SQL, which of the following is not a data Manipulation Language Commands? UPDATE DELETE CREATE SELECT UPDATE DELETE CREATE SELECT ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Prior to 1970, all data was stored in separate files, which were mostly stored on reels of magnetic tape. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation in this form is free of all modification anomalies. Third normal form Second normal form Domain/key normal form First normal form Third normal form Second normal form Domain/key normal form First normal form ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The term _____ is sometimes used to refer to a data file in which all the records have the same record format, that is, the same field names, field lengths, and data types. Table Flat file Data structure Database None of these Table Flat file Data structure Database None of these 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 None of these a hashed file a sequential file an indexed file a tree file None of these a hashed file a sequential file an indexed file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity is related to two or more associated entities that each contain specialized attributes that apply to some but not all of the instances of the entity? Instance entity Archetype entity Subtype entity Supertype entity Instance entity Archetype entity Subtype entity Supertype entity ANSWER DOWNLOAD EXAMIANS APP
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