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Check your knowledge: DevOps Tests

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1.      Assume a schema of

EMP(Id,

Name, DeptId), Dept(Id, Name).

If there are 10 records in the Emp table and 5 records in the Dept

table, how many rows will be

displayed in the result of the following SQL query?

SELECT * FROM Emp, Dept

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What

are the different types of outer joins? Choose all correct options.

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Table

Category has a field 'Id' (integer data type). Which of the following queries

returns the same results as the  query

below?

SELECT * FROM Category WHERE Id BETWEEN 2 AND 4

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Consider the following

table

STUDENTS(student_code, first_name, last_name,

email,

        

phone_no, date_of_birth, honours_subject, percentage_of_marks).

Which of the following

query

will

display all the students whose first name starts

with the character ‘A’?

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When you normalize a relation

by breaking it into two smaller relations, what must you do to maintain data

integrity?

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Which of the WHERE expressions allows you to select LastNames beginning with the letter "S"?
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What is used after the SELECT command?

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Which type of data is best (most economical but sufficient) suitable for storing birth dates starting since January 1, 1600?
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Which of the SQL functions is used to calculate the number of rows in a SQL query?
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What is HAVING?

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