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Python Quiz for Experienced Developers
What is the role of SQLite in programming?
a. It is a type of programming language
b. It serves as a relational database management system
c. It functions as a tool for web scraping
d. It is used as a cloud storage solution
Option b – It serves as a relational database management system
Which Python module allows interaction with SQLite databases?
a. sqlite3
b. pandas
c. requests
d. datetime
Option a – sqlite3
Which command is used in Python to initiate a new SQLite database?
a. CREATE DATABASE
b. CREATE TABLE
c. CONNECT DATABASE
d. None of these
Option d – None of these
What is the correct way to connect to an SQLite database in Python?
a. sqlite3.create_connection(“database.db”)
b. sqlite3.connect(“database.db”)
c. sqlite3.open_connection(“database.db”)
d. sqlite3.connection(“database.db”)
Option b – sqlite3.connect(“database.db”)
Which SQL instruction creates a new table in SQLite?
a. CREATE TABLE
b. ADD TABLE
c. NEW TABLE
d. INSERT INTO TABLE
Option a – CREATE TABLE
What does this SQL statement do?
INSERT INTO users (name, age) VALUES ('John', 25)
a. Adds a new column named ‘name’ and ‘age’ to the users table
b. Inserts a new record into the users table
c. Removes the users table from the database
d. Modifies existing data in the users table
Option b – Inserts a new record into the users table
How can you retrieve all entries from an SQLite table using Python?
a. cursor.execute(“SELECT * FROM table”)
b. cursor.fetchall()
c. cursor.fetch all()
d. connection.query(“SELECT * FROM table”)
Option b – cursor.fetchall()
What does this Python command do?
cursor.execute("SELECT * FROM users WHERE age > 30")
a. Retrieves every record from the users table
b. Inserts a record into the users table
c. Modifies age data in the users table
d. Selects rows from users where the age is above 30
Option d – Selects rows from users where the age is above 30
Which of the options below is not a valid data type in SQLite?
a. INTEGER
b. FLOAT
c. STRING
d. BLOB
Option c – STRING
How can a table be removed from an SQLite database using Python?
a. DELETE TABLE users
b. DROP TABLE users
c. REMOVE TABLE users
d. CLEAR TABLE users
Option b – DROP TABLE users
What action does the following code perform?
cursor.execute("DELETE FROM users WHERE age < 18")
a. Inserts a new entry into the users table
b. Makes changes to data in the users table
c. Removes all records from users where the age is under 18
d. Displays all records in the users table
Option c – Removes all records from users where the age is under 18
What does this Python code do?
cursor.execute("SELECT * FROM users LIMIT 5")
a. Retrieves all records from the users table
b. Retrieves only the first 5 records from the users table
c. Adds a new entry to the users table
d. Modifies data in the users table
Option b – Retrieves only the first 5 records from the users table
How can you obtain structural details of a SQLite table in Python?
a. Execute the PRAGMA table_info() command
b. Run the SHOW TABLE command
c. Use the DESCRIBE TABLE syntax
d. Use the FETCH TABLE instruction
Option a – Execute the PRAGMA table_info() command
What does this Python statement achieve?
cursor.execute("DROP INDEX idx_name")
a. Builds a new index for the name column
b. Removes the specified index on the name field
c. Eliminates the name column from the table
d. Alters the existing index on the name field
Option b – Removes the specified index on the name field
How can you read SQLite table records in portions using Python?
a. Include LIMIT and OFFSET in your SELECT query
b. Apply the fetch_chunk() function
c. Use fetchmany() with a defined batch size
d. Use the FETCH CHUNK SQL clause
Option c – Use fetchmany() with a defined batch size
What action is performed by the following line?
cursor.execute("SELECT * FROM users WHERE name LIKE 'J%'")
a. Extracts every record from the users table
b. Changes records within the users table
c. Selects records where names start with ‘J’
d. Inserts a new record into the users table
Option c – Selects records where names start with ‘J’
How do you get the ID of the most recently added row in SQLite using Python?
a. Use the LAST_INSERT_ROWID() function
b. Call the fetchone() method
c. Use last_row_inserted()
d. Invoke last_inserted_row()
Option a – Use the LAST_INSERT_ROWID() function
What is achieved with this line of code?
cursor.execute("ATTACH DATABASE 'other.db' AS other")
a. Connects ‘other.db’ to the current session
b. Disconnects ‘other.db’ from the active database
c. Initializes a new database named ‘other’
d. Updates data in the ‘other.db’ database
Option a – Connects ‘other.db’ to the current session
How can you get the schema information of a SQLite database in Python?
a. Execute PRAGMA schema_info()
b. Use the SHOW TABLES query
c. Call the schema() method
d. Use PRAGMA table_list()
Option d – Use PRAGMA table_list()
What operation does this line perform?
cursor.execute("DROP DATABASE users")
a. Removes the users table
b. Deletes the entire users database
c. Removes the users schema
d. Clears all records from the users table
Option b – Deletes the entire users database
How can you determine the storage size of a SQLite database in Python?
a. Use the PRAGMA database_size() command
b. Issue the SHOW SIZE query
c. Call the size() function
d. Run PRAGMA database_list()
Option a – Use the PRAGMA database_size() command
How can you obtain a list of all triggers in an SQLite database using Python?
a. Execute the PRAGMA triggers() command
b. Run the SHOW TRIGGERS command
c. Use the triggers() function
d. Use the PRAGMA trigger_info() command
Option a – Execute the PRAGMA triggers() command
What is the correct way to get a list of foreign keys from an SQLite table in Python?
a. Use PRAGMA foreign_key_list()
b. Use the command SHOW FOREIGN KEYS
c. Use the foreign_keys() method
d. Use PRAGMA foreign_key_list(table_name)
Option a – Use PRAGMA foreign_key_list()
How can the current date and time be retrieved in SQLite via Python?
a. Access the CURRENT_TIMESTAMP constant
b. Use the TIME command
c. Call the GET_DATE() function
d. Call the FETCH_DATE() function
Option a – Access the CURRENT_TIMESTAMP constant
How can you get a list of all views in an SQLite database using Python?
a. Use PRAGMA view_list()
b. Run the SHOW VIEWS command
c. Use the views() method
d. Use PRAGMA table_list()
Option a – Use PRAGMA view_list()
Which of the following best describes MongoDB?
a. A system for managing relational databases
b. A database that stores information as documents
c. A computer programming language
d. A framework for building websites
Option b – A database that stores information as documents
Which of the following is not a valid MongoDB data type?
a. string
b. date
c. int
d. float
Option d – float
How do you connect to a MongoDB database in Python?
a. By using the pymongo package
b. By using the pymysql package
c. By using the mongoengine library
d. By using the django module
Option a – By using the pymongo package
How can text search be implemented in a MongoDB collection using Python?
a. By using the search_text() function
b. By using the find_text() function
c. By calling the text() function
d. By applying the search() method with the $text operator
Option d – By applying the search() method with the $text operator
What is the function of the $lookup stage in MongoDB?
a. It allows combining documents from different collections
b. It helps filter records in a dataset
c. It is used for grouping records in a collection
d. It has no specific function for these operations
Option a – It allows combining documents from different collections
How can a capped collection be defined in MongoDB through Python?
a. By using the create_capped_collection() function
b. By calling the capped() function
c. By using the capped_collection() method
d. By using create_collection() with the capped setting enabled
Option d – By using create_collection() with the capped setting enabled
What port does MongoDB use by default?
a. 27017
b. 3306
c. 5432
d. 1521
Option a – 27017
How can you restrict the number of documents retrieved in a MongoDB query with Python?
a. By applying the limit() method
b. By using set_limit()
c. By calling the filter() function
d. By using the get_limit() method
Option a – By applying the limit() method
What does the $unwind operator do in MongoDB?
a. It breaks down array fields into individual records
b. It organizes documents into groups
c. It applies filters to array values
d. It serves no direct use in such tasks
Option a – It breaks down array fields into individual records
How can a partial text search be executed in a MongoDB collection using Python?
a. By using find() with a partial match condition
b. By applying search() with a partial text string
c. By calling the partial_text() function
d. By using the partial_search() method
Option a – By using find() with a partial match condition
What is the use of the $graphLookup operator in MongoDB?
a. To search through documents in a graph-like structure
b. To build graphs from collection data
c. To organize documents by common values
d. It serves no such purpose
Option a – To search through documents in a graph-like structure
How can you create a TTL index in a MongoDB collection using Python?
a. Through the create_ttl_index() function
b. By calling the ttl() method
c. By using create_index() with expireAfterSeconds set
d. By using set_ttl_index()
Option c – By using create_index() with expireAfterSeconds set
What is the function of the $geoNear operator in MongoDB?
a. It performs location-based queries on collection data
b. It categorizes documents based on nearness
c. It filters records by geographic fields
d. It does not support spatial filtering
Option a – It performs location-based queries on collection data
How can a compound index be created on more than one field in MongoDB using Python?
a. By using the create_index() method with multiple key-value pairs
b. By calling compound_index()
c. By using the index() function with multiple fields
d. By applying the set_index() method
Option a – By using the create_index() method with multiple key-value pairs
We covered all the Python Quiz for Experienced Developers above in this post for free so that you can practice well for the exam.
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