Introduction to Database System An entity class is a collection of entities and is described by the structure of the entities in that class. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to select only one copy of each set of duplicable rows SELECT DISTINCT None of these SELECT UNIQUE SELECT DIFFERENT All of these SELECT DISTINCT None of these SELECT UNIQUE SELECT DIFFERENT All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System When you have finished entering information into a form the contents of the form are written to the data file the template is written to the data file the contents of the form can be printed All of the listed here the contents of the form are written to the data file the template is written to the data file the contents of the form can be printed All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The data dictionary tells the DBMS what attribute are possessed by the data All of the listed here what files are in the database what these files contain what attribute are possessed by the data All of the listed here what files are in the database what these files contain ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In which of the following is a single-entity instance of one type related to many entity instances of another type? One-to-Many Relationship Many-to-Many Relationship One-to-One Relationship Composite Relationship One-to-Many Relationship Many-to-Many Relationship One-to-One Relationship Composite Relationship ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is a serious problem of file management systems? program dependence data redundancy All of these difficult to update lack of data independence program dependence data redundancy All of these difficult to update lack of data independence ANSWER DOWNLOAD EXAMIANS APP
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