Introduction to Database System In SQL, which command is used to select only one copy of each set of duplicable rows SELECT DIFFERENT SELECT DISTINCT All of these None of these SELECT UNIQUE SELECT DIFFERENT SELECT DISTINCT All of these None of these SELECT UNIQUE 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? Supertype entity Archetype entity Subtype entity Instance entity Supertype entity Archetype entity Subtype entity Instance entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A good query system can accept English language commands allows non-programmers to access information stored in a database both (a) and (b) None of these can be accessed only by data processing professionals can accept English language commands allows non-programmers to access information stored in a database both (a) and (b) None of these can be accessed only by data processing professionals ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A database is called "self-describing" because it contains a description of itself. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation is in this form if it is in BCNF and has no multivalued dependencies: fourth normal form. third normal form. second normal form. domain/key normal form. fourth normal form. third normal form. second normal form. domain/key normal form. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to select data in rows and column from one or more tables? BROWSE CHOOSE LIST SELECT None of these BROWSE CHOOSE LIST SELECT None of these ANSWER DOWNLOAD EXAMIANS APP
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