Introduction to Database System The model for a _____ resembles the hierarchical model in many respects. Hierarchical database None of these Relational database Network database Distributed database Hierarchical database None of these Relational database Network database Distributed database 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 Subtype entity Archetype entity Supertype entity Instance entity Subtype entity Archetype entity Supertype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The purpose of a database is to help people stop using spreadsheets. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key: identifies a column. must always be composed of two or more columns. can only be one column. identifies a row. identifies a column. must always be composed of two or more columns. can only be one column. identifies a row. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to select data in rows and column from one or more tables? CHOOSE None of these LIST SELECT BROWSE CHOOSE None of these LIST SELECT BROWSE ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier? ID-dependent entity Weak entity ID- independent entity Strong entity ID-dependent entity Weak entity ID- independent entity Strong entity ANSWER DOWNLOAD EXAMIANS APP
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