Introduction to Linux II – Chapter 03 Exam Answers 100% PDF file

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  1. The acronym SQL stands for:
    • System Query Language
    • Structured Query Language
    • Systematic Query Level
    • Structured Qualitative Language
  2. Data manipulation statements cannot be used for:
    • Defining tables and views
    • Viewing data from tables
    • Updating data in tables
    • Deleting one or more records
  3. SQL statements must be capitalized for error-free execution.True or False?
    • True
    • False
  4. SQL statements must be terminated with a:
    • Semicolon ;
    • Colon :
    • Exclamation point !
    • Comma ,
  5. Which of the following is not an open source database program?
    • SQL Server
    • MySQL
    • SQLIte
    • Postgres
  6. One employee can work on multiple projects. Similarly, a project can have more than one employee assigned to it. This is an example of a:
    • One-to-many relationship
    • Many-to-one relationship
    • One-to-one relationship
    • Many-to-many relationship
  7. The database administrator decides to break one large employee table into two parts. The first table, employee_master, contains selected key information that does not change over time. The second table, employee_details, contains data that is considered optional. The relationship between employee_master and employee_details would most likely be a:
    • One-to-many relationship
    • One-to-one relationship
    • Many-to-many relationship
    • Many-to-one relationship
  8. Records represent a group of information about an object. Records are represented as __________ in a database table.
    • Rows
    • Columns
  9. In the case of a many-to-many relationship between two tables, a third table is not required to simplify the situation into two separate one-to-many relationships.True or False?
    • True
    • False
  10. Identify the correct Data Definition statement from the list below:
    • UPDATE statement
    • INSERT statement
    • DELETE statement
  11. The INSERT statement can add only one record at a time.True or False?
    • True
    • False
  12. The following SQL command is run:
    UPDATE people SET LastName=”Albert”;What is the problem with this statement?

    • Since there is no WHERE clause, it sets the last name of all the people in table
    • Syntax is incorrect, resulting in an error message
    • Data type has to be specified for LastName
    • Table name people should be capitalized
  13. Which of the following statements INCORRECTLY describes the WHERE clause?
    • Used to reduce the result set
    • Can be used with the UPDATE, SELECT and DELETE statements
    • Wildcards cannot be used
    • NOT operator can negate the value of a comparison
  14. It is risky to use a DELETE statement without a WHERE clause because:
    • It will remove the primary key from the table
    • It will remove all the tables in the database
    • It will remove all the records in the table
    • The performance of execution is slow
  15. Refer to the following SQL statement and identify the type of query:
    SELECT * FROM Projects WHERE ProjectID IN (SELECT ProjectID FROM PeopleProjects);

    • Simple query
    • Sub query
    • Outer join
    • Structured query
  16. Which of the following should be used in order to display SQL results in ascending order of age?
    • ORDER BY clause
    • SORT BY clause
    • JOIN statement
    • WHERE clause
  17. Which SQL statement is used to fetch data from a table in the database?
    • INSERT
    • SET
    • FETCH
    • SELECT
  18. Which of the following is NOT a group value function in SQL?
    • SUM
    • AVG
    • REPEAT
    • COUNT
  19. What does the following SQL command output?
    SELECT * FROM Projects WHERE ProjectID LIKE “P*”;

    • This displays all projects where ProjectID ends with P
    • This displays all projects where ProjectID has two characters and the first one is P
    • This displays all projects where ProjectID starts with P
    • This displays all projects where ProjectID has two characters and the second one is P
  20. Which of the following is TRUE about a primary key?
    • Primary key column must be unique and cannot be NULL
    • Primary key column can have same values more than once
    • Primary key is similar to foreign key
    • Primary key column cannot be of string type
  21. Which of the following will insert a record into a table named employee with empid and empname as columns?
    • INSERT EMPLOYEE VALUES ( 101,’Joe’);
    • INSERT EMPLOYEE ( 101,’Joe’);
  22. Which of the following is not a valid SQL keyword or SQL clause?
    • INSERT
    • SELECT
    • INVERT
    • UPDATE
  23. Which of the following SQL clauses is used to delete data from a database table?
    • DROP
    • CLEAR
    • REMOVE
    • DELETE
  24. RDBMS stands for:
    • Relational Database Monitoring System
    • Relational Database Management System
    • Read Database Master System
    • Real Data Management System

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