Introduction to Database System A key: must always be composed of two or more columns. identifies a column. identifies a row. can only be one column. must always be composed of two or more columns. identifies a column. identifies a row. can only be one column. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is NOT a basic element of all versions of the E-R model? Relationships Attributes Entities Primary keys Relationships Attributes Entities Primary keys ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A _____ Contains fields of data about one entity. Document None of these File Fields Record Document None of these File Fields Record ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Structured Query Language (SQL) is an internationally recognized standard language that is understood by all commercial database management system products. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The model for a _____ resembles the hierarchical model in many respects. Hierarchical database Network database None of these Distributed database Relational database Hierarchical database Network database None of these Distributed database Relational database ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The DBMS acts as an interface between what two components of an enterprise-class database system? Database application and the database The user and the database application Database application and SQL Data and the database Database application and the database The user and the database application Database application and SQL Data and the database ANSWER DOWNLOAD EXAMIANS APP
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