Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate)

Graded Quiz: Basic SQL :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025

1. Question 1 Result of: SELECT DISTINCT FIRSTNAME FROM INSTRUCTOR ✅ LEONPAULJOE ❌ LEON, PAUL, LEON, JOE ❌ Repeated names ❌ Full names with last names Explanation: DISTINCT FIRSTNAME returns each unique FIRSTNAME once, without duplicates. 2. Question 2 SQL: UPDATE INSTRUCTOR SET LASTNAME = 'Brewster' WHERE LASTNAME = 'Smith' ❌ Changes Brewster → Smith ❌ Updates all rows to Brewster ❌ Updates all rows to Smith ✅ Changes the last name… <a href="https://codeshala.io/platform/coursera/course/databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-2/assignment/graded-quiz-basic-sql-databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-answers-2025-2/" rel="bookmark">Graded Quiz: Basic SQL :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025</a>

Relational DB Concepts and Tables :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025

1. Question 1 Which statements about a database are correct? ✅ A database is a logically coherent collection of data with some inherent meaning ❌ Data can only be added and queried but not modified ❌ Only SQL can query data ❌ All of the above Explanation: Databases can be modified, and SQL is not the only way to… <a href="https://codeshala.io/platform/coursera/course/databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-2/assignment/relational-db-concepts-and-tables-databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-answers-2025-2/" rel="bookmark">Relational DB Concepts and Tables :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025</a>

Graded Quiz: Refining Your Results :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025

1. Question 1 Correct string pattern to find last names starting with J: ❌ J* ❌ J$ ✅ J% ❌ J# Explanation: In SQL, the wildcard for matching any number of characters is %. 2. Question 2 Correct way to sort result set in descending order: ❌ SELECT ID … ✅ SELECT * FROM TABLE_NAME ORDER BY ID DESC ❌ ORDER BY ID ❌… <a href="https://codeshala.io/platform/coursera/course/databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-2/assignment/graded-quiz-refining-your-results-databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-answers-2025-2/" rel="bookmark">Graded Quiz: Refining Your Results :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025</a>

Graded Quiz: Functions, Multiple Tables, and Sub-queries :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025

1. Question 1 Query that returns employees belonging to the department with the highest department ID: ❌ Query 1 ❌ Query 2 ✅ SELECT * FROM EMPLOYEES WHERE DEP_ID = ( SELECT MAX(DEPT_ID_DEP) FROM DEPARTMENTS ) ❌ Query 4 Explanation: MAX(DEPT_ID_DEP) gives the highest department ID, and the subquery returns that value. 2. Question 2 Correct way to… <a href="https://codeshala.io/platform/coursera/course/databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-2/assignment/graded-quiz-functions-multiple-tables-and-sub-queries-databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-answers-2025-2/" rel="bookmark">Graded Quiz: Functions, Multiple Tables, and Sub-queries :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025</a>

Graded Quiz: Accessing databases using Python :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025

1. Question 1 Correct command to connect Jupyter Notebook SQL extension to EMP.db: ✅ %sql sqlite:///EMP.db ❌ %sql ❌ sqlite:///EMP.db ❌ %sql sqlite:/EMP.db ❌ %sql sqlite3://EMP.db Explanation: The correct URI format for SQLite is: sqlite:///filename.db 2. Question 2 Select two uses of cell magic in Jupyter Notebooks: ✅ Coding in a language other than Python ❌ Converting notebook’s default language… <a href="https://codeshala.io/platform/coursera/course/databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-2/assignment/graded-quiz-accessing-databases-using-python-databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-answers-2025-2/" rel="bookmark">Graded Quiz: Accessing databases using Python :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025</a>

Graded Quiz on Assignment :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025

1. Question 1 What is the total number of crimes recorded in the CRIME table? ✅ 533 ❌ 555 ❌ 433 ❌ 53 Explanation:Typical lab subset used in the course contains 533 rows for the CRIME table. 2. Question 2 Correct query to list community areas (number & name) with per capita income < 11000: ❌ SELECT COMMUNITY_AREA_NUMBER, COMMUNITY_AREA_NAME… <a href="https://codeshala.io/platform/coursera/course/databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-2/assignment/graded-quiz-on-assignment-databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-answers-2025-2/" rel="bookmark">Graded Quiz on Assignment :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025</a>

Final Exam :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025

1. Question 1 The SELECT statement is called a ______. ❌ Table name ✅ Query ❌ Function ❌ Operator Explanation:SELECT is a query used to retrieve data. 2. Question 2 SQL to delete authors with IDs A10 and A11: ✅ DELETE FROM AUTHOR WHERE AUTHOR_ID IN (‘A10’, ‘A11’) ❌ AUTHOR_ID IS (…) ❌ DELETE AUTHOR_ID IS (…) ❌ DELETE (‘A10′,’A11’)… <a href="https://codeshala.io/platform/coursera/course/databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-2/assignment/final-exam-databases-and-sql-for-data-science-with-python-ibm-data-analyst-professional-certificate-answers-2025-2/" rel="bookmark">Final Exam :Databases and SQL for Data Science with Python (IBM Data Analyst Professional Certificate) Answers 2025</a>