Which of the following is an advantage of MySQL being open-source?
An entity can participate in multiple relationships in an ER…
An entity can participate in multiple relationships in an ER diagram.
Which type of attribute cannot be divided further?
Which type of attribute cannot be divided further?
Why is the DECIMAL data type recommended for storing money o…
Why is the DECIMAL data type recommended for storing money or prices in SQL?
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’);
Which of the following operations can violate referential in…
Which of the following operations can violate referential integrity?
What is referential integrity in a relational database?
What is referential integrity in a relational database?
Which SQL command will retrieve all users whose age is great…
Which SQL command will retrieve all users whose age is greater than 25 and who belong to the ‘US’?
What is the primary purpose of DDL commands in SQL?
What is the primary purpose of DDL commands in SQL?
In the context of SQL, what is the purpose of a schema?
In the context of SQL, what is the purpose of a schema?