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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?

Options:

Repetition of data, application program flexibility, and data centralization

Incompatibility of files, tabular data structures, and data dependence

Separation of data, repetition of data, and data independence

Application program inflexibility, data dependence, and separation of data

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Question 2

Consider the relations shown in the exhibit. Due to restructuring, the sales department has been eliminated and the employees working in that department have been dismissed. All ID information is stored as integers. Which SQL statement would be used to return a relation with all information for the employees who have been dismissed?

Options:

SELECT *

FROM Employee;

SELECT ID, Last_Name

FROM Employee;

WHERE ID = 0004;

SELECT *

FROM Employee

WHERE Dept_ID = 022;

SELECT *

FROM Employee

WHERE Dept_ID = 022;

Question 3

Which three pieces of information did E.F. Codd describe as necessary to retrieve a data value from a relational database?

Options:

Attribute, domain, and tuple

Entity, relation name, and domain

Table name, primary key, and entity

Attribute, relation name, and primary key

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CIW v5 Database Design Specialist Questions and Answers

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