Introduction to SQL
Which of the following is the original purpose of SQL?

To specify the syntax and semantics of SQL manipulation language
To define the data structures
All of these
To specify the syntax and semantics of SQL data definition language

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Introduction to SQL
Which of the following query is correct for using comparison operators in SQL?

None of these
SELECT name, course_name FROM student WHERE age>50 and <80;
SELECT name, course_name FROM student WHERE age>50 and WHERE age<80;
SELECT name, course_name FROM student WHERE age>50 and age <80;

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