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
71. What is the purpose of user accounts in MySQL?
A. To organize tables in a database
B. To authenticate and control access
C. To create new databases
D. To optimize query performance
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Answer: To authenticate and control access
72. Which statement is used to create a new user account in MySQL?
A. CREATE USER
B. ADD USER
C. INSERT USER
D. MAKE USER
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Answer: CREATE USER
73. Which privilege allows a user to read data from a MySQL database?
A. SELECT
B. UPDATE
C. DELETE
D. INSERT
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Answer: SELECT
74. What is the purpose of the GRANT statement in MySQL?
A. To revoke privileges from users
B. To create new databases
C. To modify user account settings
D. To grant privileges to users
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Answer: To grant privileges to users
75. Which SQL command is used to remove a user's privileges in MySQL?
A. DELETE PRIVILEGES
B. REVOKE PRIVILEGES
C. REMOVE PRIVILEGES
D. DROP PRIVILEGES
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Answer: REVOKE PRIVILEGES
76. Which global privilege is required to create new databases in MySQL?
A. CREATE
B. SELECT
C. DELETE
D. ALTER
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Answer: CREATE
77. In MySQL, what is the purpose of the FLUSH PRIVILEGES statement?
A. To display a user's privileges
B. To refresh the privileges cache
C. To create new users
D. To revoke all privileges
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Answer: To refresh the privileges cache
78. Which statement allows a user to change their own password in MySQL?
A. CHANGE PASSWORD
B. MODIFY PASSWORD
C. UPDATE PASSWORD
D. SET PASSWORD
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Answer: SET PASSWORD
79. What is the SUPER privilege in MySQL used for?
A. Managing user accounts
B. Administrative tasks
C. Granting SELECT privileges
D. Inserting data into tables
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Answer: Administrative tasks
80. What SQL command is used to delete a user account in MySQL?
A. REMOVE USER
B. DROP USER
C. DELETE USER
D. ERASE USER
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Answer: DROP USER
