Question: 1
Your company must choose which type of database to use for a new project. Which of the following lists
three characteristics of file-based database systems?
A. Repetition of data, application program flexibility, and data centralization
B. Incompatibility of files, tabular data structures, and data dependence
C. Separation of data, repetition of data, and data independence
D. Application program inflexibility, data dependence, and separation of data
Answer: D
Question: 2
Which statement best describes a procedural data manipulation language command?
A. It contains a query language for retrieving data.
B. It can be used only to manipulate data through a SQL interface.
C. The user is not required to know how the underlying data structures are implemented.
D. It requires that the user know how the underlying data structures are implemented.
Answer: D
Question: 3
Consider the following database information: domain s_id: integer domain grd: fixed length character
string length 1 STUDENT_GRADE( Student_Number: s_id NOT NULL Grade: grd ) Primary Key
Student_Number During which phase of the database design process would this information be
developed?
A. Logical
B. Physical
C. Conceptual
D. Implementation
Answer: A
Question: 4
In a relational database, which term describes a single table consisting of rows and columns?
A. Entity
B. Matrix
C. Relation
D. Data dictionary
Answer: C
Question: 5
Which pair of relational algebraic operations requires union compatibility?
A. Projection and Cartesian product
B. Selection and projection
C. Intersection and difference
D. Cartesian product and intersection
Answer: C
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