Introduction to Database System Which command is used to select distinct subject (SUB) from the table (BOOK)? SELECT ALL FROM BOOK SELECT SUB FROM BOOK All of these SELECT DISTINCT SUB FROM BOOK None of these SELECT ALL FROM BOOK SELECT SUB FROM BOOK All of these SELECT DISTINCT SUB FROM BOOK None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A _____ means that one record in a particular record type may be related to more than one record of another record type. One-to-many relationship Many-to many relationship Many-to-one relationship One-to-one relationship One-to-many relationship Many-to many relationship Many-to-one relationship One-to-one relationship ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The data dictionary tells the DBMS what files are in the database All of the listed here what these files contain what attribute are possessed by the data what files are in the database All of the listed here what these files contain what attribute are possessed by the data ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A compound key None of these uniquely identifies an item in a list is made up a several pieces of information both (a) and (b) is a combination of each unique key None of these uniquely identifies an item in a list is made up a several pieces of information both (a) and (b) is a combination of each unique key ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to make permanent changes made by statements issue since the beginning of a transaction? PACK COMMIT ZIP SAVE PACK COMMIT ZIP SAVE ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System When designing a database, first identify the entities, then determine the attributes, and finally establish the relationships. True False True False ANSWER DOWNLOAD EXAMIANS APP