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Python Institute PCAD-31-02 Exam Syllabus Topics:

Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions:

1. When joining two tables in a relational database using SQL, which clause is used to specify the relationship between their columns?

A) JOIN ON
B) HAVING
C) FROM
D) GROUP BY

2. Which of the following correctly demonstrates the use of parameterized queries using Python's sqlite3 module?

A) cursor.execute("SELECT * FROM users WHERE id = ?", user_id)
B) cursor.execute("SELECT * FROM users WHERE id = " + user_id)
C) cursor.execute("SELECT * FROM users WHERE id = ?", (user_id,))
D) cursor.execute("SELECT * FROM users WHERE id = ':id'", {'id': user_id})

3. What is the main reason for using try-except blocks in a data analysis script that reads multiple files?

A) To ensure functions always return None
B) To automatically restart the script after execution
C) To enforce strict type annotations
D) To gracefully handle runtime errors without crashing the program

4. Which technique is considered a primary defense against SQL injection when executing database queries from Python?

A) Using parameterized queries
B) Encrypting the database connection
C) Escaping quotes manually in SQL strings
D) Closing the database cursor after each query

5. What is the primary purpose of using annotations in a data visualization?

A) To highlight important data points and provide contextual information
B) To ensure faster rendering in large datasets
C) To enhance interactivity in static plots
D) To replace the need for axes

Solutions: