Which of the following best describes the information contained in the data dictionary (or system catalog)?
Which of the following best describes the information contained in the data dictionary (or system catalog)?
Which relational algebraic operation is used to select specific columns (attributes) from a relation?
Which relational algebraic operation is used to select specific columns (attributes) from a relation?
Which of the following describes two desirable characteristics of a primary key?
Which of the following describes two desirable characteristics of a primary key?
which data records are stored in one or more files with no structured relationship?
Which term best defines a database system in which data records are stored in one or more files with no structured relationship?
Which of the following best describes the two-tier database architecture?
Which of the following best describes the two-tier database architecture?
Which term describes an attribute or combination of attributes that uniquely identifies a row in a relation?
Which term describes an attribute or combination of attributes that uniquely identifies a row in a relation?
Which of the following is a characteristic of the three-tier database architecture?
Which of the following is a characteristic of the three-tier database architecture?
Which statement best describes a candidate key?
Which statement best describes a candidate key?
Which subset of Structured Query Language (SQL) is used to create and name database entities?
Which subset of Structured Query Language (SQL) is used to create and name database entities?
Which of the following best describes the functionality of a DBMS?
Your enterprise must decide whether to use a database management system. Which of the following best describes the functionality of a DBMS?