Which of the following SQL constraints ensures that a column’s values are always unique and cannot be NULL?
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The LIKE operator is case-sensitive in MySQL by default.
The LIKE operator is case-sensitive in MySQL by default.
Which operator is used in SQL to match string patterns?
Which operator is used in SQL to match string patterns?
In an Enhanced Entity-Relationship (EER) model, what best de…
In an Enhanced Entity-Relationship (EER) model, what best describes a Union Type (Category)?
Which type of attribute cannot be divided further?
Which type of attribute cannot be divided further?
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’);
What is the primary purpose of the Enhanced ER (EER) model?
What is the primary purpose of the Enhanced ER (EER) model?
What does specialization in an EER model represent?
What does specialization in an EER model represent?
In the context of SQL, what is the purpose of a schema?
In the context of SQL, what is the purpose of a schema?
What is the role of the primary key in a relational database…
What is the role of the primary key in a relational database?