Introduction to Database System A key: must always be composed of two or more columns. identifies a row. identifies a column. can only be one column. must always be composed of two or more columns. identifies a row. identifies a column. can only be one column. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key is a group of one or more attributes that uniquely identifies a row. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System What name is given to the collection of facts, items of information or data which are related in some way? Directory information Information tree Database Information provider Directory information Information tree Database Information provider ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System One of the reasons why OODBMSs have not been widely used for business information systems is that OOP is obsolete. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A good query system both (a) and (b) can accept English language commands None of these allows non-programmers to access information stored in a database can be accessed only by data processing professionals both (a) and (b) can accept English language commands None of these allows non-programmers to access information stored in a database can be accessed only by data processing professionals ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a one-to-many relationship, the entity that is on the many side of the relationship is called a(n) ________ entity. parent subtype child instance parent subtype child instance ANSWER DOWNLOAD EXAMIANS APP
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