Introduction to Database System A minimum cardinality is the minimum number of entity instances that may participate in a relationship instance. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is NOT a basic element of all versions of the E-R model? Relationships Attributes Primary keys Entities Relationships Attributes Primary keys Entities ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which command is used to select distinct subject (SUB) from the table (BOOK)? All of these SELECT DISTINCT SUB FROM BOOK None of these SELECT SUB FROM BOOK SELECT ALL FROM BOOK All of these SELECT DISTINCT SUB FROM BOOK None of these SELECT SUB FROM BOOK SELECT ALL FROM BOOK ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A command that lets you change one or more fields in a record is Insert None of these All of these Modify Look-up Insert None of these All of these Modify Look-up ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A data dictionary is a special file that contains the data types of all fields in all files the names of all fields in all files All of these None of these the widths of all fields in all files the data types of all fields in all files the names of all fields in all files All of these None of these the widths of all fields in all files ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which two files are used during operation of the DBMS? None of the listed here data dictionary and query language query language and utilities data dictionary and transaction log None of the listed here data dictionary and query language query language and utilities data dictionary and transaction log ANSWER DOWNLOAD EXAMIANS APP
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