Introduction to Database System A data dictionary is a special file that contains the widths of all fields in all files All of these None of these the names of all fields in all files the data types of all fields in all files the widths of all fields in all files All of these None of these the names of all fields in all files the data types of all fields in all files 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. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to changes data in a table? BROWSE APPEND UPDATE INSERT BROWSE APPEND UPDATE INSERT 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 Subtype entity Archetype entity Instance entity Supertype entity Subtype entity Archetype entity Instance entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The DBMS acts as an interface between what two components of an enterprise-class database system? Database application and the database Database application and SQL Data and the database The user and the database application Database application and the database Database application and SQL Data and the database The user and the database application ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Periodically adding, changing and deleting file records is called file renewing Updating upgrading restructuring renewing Updating upgrading restructuring ANSWER DOWNLOAD EXAMIANS APP
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