MySQL is an open-source relational database management system (RDBMS) that has been a cornerstone of web applications and data-driven solutions for over two decades. Developed by Oracle, MySQL offers a robust and efficient platform for storing, managing, and retrieving structured data. Its features include support for SQL, high performance, scalability, and extensive community support. MySQL is widely used for web development, e-commerce, content management systems, and more, making it a versatile and trusted database solution for organizations of all sizes, from startups to large enterprises.
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Practice Test
61. Which SQL statement is used to insert data into a MySQL table?
A. INSERT INTO
B. UPDATE
C. DELETE FROM
D. CREATE TABLE
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Answer: INSERT INTO
62. What is the purpose of the SQL SELECT statement in MySQL?
A. To insert new records
B. To update existing records
C. To retrieve data
D. To delete records
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Answer: To retrieve data
63. What does the SQL UPDATE statement do in MySQL?
A. Adds a new row
B. Deletes records
C. Modifies existing data
D. Creates a new table
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Answer: Modifies existing data
64. How can you delete all rows from a MySQL table?
A. DELETE * FROM
B. DELETE ALL
C. DELETE FROM ALL
D. TRUNCATE TABLE
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Answer: TRUNCATE TABLE
65. Which SQL clause is used to filter the results of a SELECT query in MySQL?
A. FROM
B. WHERE
C. GROUP BY
D. ORDER BY
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Answer: WHERE
66. What SQL statement is used to add a new column to an existing MySQL table?
A. CREATE COLUMN
B. ALTER TABLE
C. ADD COLUMN
D. INSERT COLUMN
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Answer: ADD COLUMN
67. What is the purpose of the SQL DELETE statement in MySQL?
A. To create new records
B. To update records
C. To delete data
D. To insert records
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Answer: To delete data
68. How can you update data in multiple rows with a single MySQL UPDATE statement?
A. Use multiple UPDATE statements
B. Use a SELECT statement with UPDATE
C. Use a JOIN clause with UPDATE
D. Update each row individually
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Answer: Use a JOIN clause with UPDATE
69. Which SQL statement is used to retrieve distinct values from a column in MySQL?
A. SELECT DISTINCT
B. SELECT UNIQUE
C. SELECT VALUES
D. SELECT UNIQUE VALUES
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Answer: SELECT DISTINCT
70. What SQL statement is used to remove a table's structure and data in MySQL?
A. DROP TABLE
B. DELETE TABLE
C. REMOVE TABLE
D. ERASE TABLE
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Answer: DROP TABLE