html5-css3-ajax-java-php5-mysql-seo-pdf-test-answers-book-free-2015-2016-upwork | All upwork answers

Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: The OR operator displays a record if ANY conditions listed are true. The AND operator displays a record if ALL of the conditions listed are true

The Answer of this quiz is ' True'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: Which of the following correctly calls the stored procedure "test" which has no parameters?

The Answer of this quiz is ' CALL test;'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: Which of the following clauses can be used in a SELECT statement to reduce the results to a unique list of values?

The Answer of this quiz is ' DISTINCT'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: I would like to retrieve the date with this format : dd/mm/YYYY in a field called btimestamp. Choose the correct way.

The Answer of this quiz is ' SELECT DATE_FORMAT(btimestamp,'%d/%m/%Y') AS bdate FROM ...'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: When a MySQL database is "normalized", by common definition, it means which of the following?

The Answer of this quiz is ' count(distinct)'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: Which of the following is used to control case sensitivity?

The Answer of this quiz is ' binary'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: Assign the custom `foo` variable with the value `bar`

The Answer of this quiz is ' SET @foo = 'bar';'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: What does this statement: DELETE FROM xpto WHERE 1;

The Answer of this quiz is ' Delete all records in table 'xpto' but does not reset the AUTO_INCREMENT sequence'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: True of false? TEXT is case-insensitive in BLOB

The Answer of this quiz is ' True'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: Which of the following are true concerning indexes?

The Answer of this quiz is ' Indexes will slow down inserts, but speed up selects'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: What does the following command output: 'SELECT 1'

The Answer of this quiz is ' 1'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: Which of the following queries returns 100 results, starting from the 25th result?

The Answer of this quiz is ' SELECT book_title FROM books LIMIT 24, 100'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: How would you remove all rows from a table "STAFF"

The Answer of this quiz is ' DELETE FROM STAFF'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: Which of the following is used to access a result set stored in memory after execution of a query, allowing the result data to be manipulated on a row-by-row basis?

The Answer of this quiz is ' Cursor'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: What happens when a Unique or Primary Key column is set to AUTO INCREMENT, and an INSERT would exceed the maximum value for that column?

The Answer of this quiz is ' It stops incrementing, producing a duplicate key error.'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: In a WAMP environment, what is the correct way to permanently change the largest possible packet that can be transmitted to or from a MySQL server?

The Answer of this quiz is ' Edit the my.ini file and change the setting max_allowed_packet. Then restart the service.'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: The user-created stored function 'test' takes a varchar(5) and an integer and returns a varchar. Which of the following correctly calls the function?

The Answer of this quiz is ' CALL test('asdfg', 6);'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: What term describes the number of unique values in an index?

The Answer of this quiz is ' Cardinality'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: Which foreign keys do MyISAM tables support?

The Answer of this quiz is ' None, MyISAM tables do not support foreign keys.'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: Given two tables, t1 and t2, the join condition "t1.t2_id = t2.id" how do you get rows from t1 that have NO counterparts in t2?

The Answer of this quiz is ' LEFT JOIN t2 ON t1.t2_id = t2.id WHERE t2.id IS NULL'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: Which of the following statements can be used to remove user accounts from MySQL?

The Answer of this quiz is ' DROP USER user;'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: What command executed by a client exports data to a file?

The Answer of this quiz is ' SELECT ... INTO OUTFILE'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: The _____________ privilege is often used when loading a file into a database table.

The Answer of this quiz is ' File_priv'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: What is a major difference between MyISAM and InnoDB storage engines?

The Answer of this quiz is ' InnoDB uses row locking where MyISAM uses table locking.'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: When using the grant command which phrase sets the password of the user?

The Answer of this quiz is ' • Identified By'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: Which of the following MySQL client command line arguments would you use to connect to a server?

The Answer of this quiz is ' % mysql [options]'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: The GROUP BY clause of a SELECT statement requires which of the following?

The Answer of this quiz is ' • ORDER BY clause • WHERE clause • LIMIT clause • HAVING clause • None of these'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: What is the maximum allowed length of a column name?

The Answer of this quiz is ' 64'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: How would you select a value that lets column B (if specified) override column A?

The Answer of this quiz is ' COALESCE(B, A)'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: Which of these queries will return the values of the "order" column in the "slides" table in descending order?

The Answer of this quiz is ' SELECT `order` FROM `slides` ORDER BY `order` DESC'

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Upwork All skills Test Answers >> Upwork answers of MySQL >> Complete MySQL Quiz Answers

Question: Which is NOT an available storage engine?

The Answer of this quiz is ' SQLite'