Introduction to Database System A computer file can be best described as an orderly collection of data items a random collection of data items None of these a single data item a general collection of data items an orderly collection of data items a random collection of data items None of these a single data item a general collection of data items ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Queries to a database both (a) and (b) can use aggregate functions like SUM and COUNT None of these All of these are written in English both (a) and (b) can use aggregate functions like SUM and COUNT None of these All of these are written in English ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A data dictionary is a special file that contains the names of all fields in all files the widths of all fields in all files All of these None of these the data types of all fields in all files the names of all fields in all files the widths of all fields in all files All of these None of these the data types of all fields in all files 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-one relationship One-to-one relationship Many-to many relationship One-to-many relationship Many-to-one relationship One-to-one relationship Many-to many relationship ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If a piece of data is stored in two places in the database, then None of these storage space is wasted it can be more easily accessed changing the data is one spot will cause data inconsistency both (a) and (b) None of these storage space is wasted it can be more easily accessed changing the data is one spot will cause data inconsistency both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If you want to organize a file in multiple ways, it is better to _____ the data rather than to sort it. Delete Sort Key Update Index None of these Delete Sort Key Update Index None of these ANSWER DOWNLOAD EXAMIANS APP
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