Introduction to Database System 1:1, 1:N and N:M relationships are also known as HAS-A relationships. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator? Instance entity Archetype entity Supertype entity Subtype entity Instance entity Archetype entity Supertype entity Subtype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Relations are categorized into normal forms according to the referential integrity constraints that they have. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If a piece of data is stored in two places in the database, then both (a) and (b) storage space is wasted changing the data is one spot will cause data inconsistency None of these it can be more easily accessed both (a) and (b) storage space is wasted changing the data is one spot will cause data inconsistency None of these it can be more easily accessed ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A primary key is a composite key that was selected to be the main identifier for the relation. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Queries to a database None of these both (a) and (b) are written in English All of these can use aggregate functions like SUM and COUNT None of these both (a) and (b) are written in English All of these can use aggregate functions like SUM and COUNT ANSWER DOWNLOAD EXAMIANS APP
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