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What does the GROUP BY clause do in SQL?

What does the GROUP BY clause do in SQL?

Published March 9, 2025
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What is the role of the INFORMATION_SCHEMA in a database cat…

What is the role of the INFORMATION_SCHEMA in a database catalog?

Published March 9, 2025
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What is a tuple in a relational database?

What is a tuple in a relational database?

Published March 9, 2025
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 Which of the following SQL constraints ensures that a colum…

 Which of the following SQL constraints ensures that a column’s values are always unique and cannot be NULL?

Published March 9, 2025
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The LIKE operator is case-sensitive in MySQL by default.

The LIKE operator is case-sensitive in MySQL by default.

Published March 9, 2025
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Which operator is used in SQL to match string patterns?

Which operator is used in SQL to match string patterns?

Published March 9, 2025
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In an Enhanced Entity-Relationship (EER) model, what best de…

In an Enhanced Entity-Relationship (EER) model, what best describes a Union Type (Category)?

Published March 9, 2025
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Which type of attribute cannot be divided further?

Which type of attribute cannot be divided further?

Published March 9, 2025
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What will happen if the following SQL command is executed, i…

What will happen if the following SQL command is executed, if the age column has a CHECK constraint enforcing positive values? INSERT INTO Users (username, age, country_code) VALUES (‘alice756’, -1 , ‘US’);

Published March 9, 2025
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What is the primary purpose of the Enhanced ER (EER) model?

What is the primary purpose of the Enhanced ER (EER) model?

Published March 9, 2025
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