Introduction to Database System Given the functional dependency R → (S,T) , then it is also true that R → S. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a _____ a parent record type can be linked to one or more "child" record types, but a child record type can have only one parent. Hierarchical database Distributed database Relational database Network database Hierarchical database Distributed database Relational database Network database ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following products was the first to implement true relational algebra in a PC DBMS? dBase-II R:base IDMS Oracle dBase-II R:base IDMS Oracle ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a relation, the rows are sometimes called "records". False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key: can only be one column. identifies a column. identifies a row. must always be composed of two or more columns. can only be one column. identifies a column. identifies a row. must always be composed of two or more columns. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In an Enterprise-class database system, business users interact directly with database applications that interact with the DBMS, which directly accesses the database data. True False True False ANSWER DOWNLOAD EXAMIANS APP
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