SQLite in Python Quiz

What is the first step to connect to a SQLite database in Python?

• Create a new database

• Install the sqlite3 module

• Connect to the database using the connect() function

• Import the sqlite3 module

How do you create a table in SQLite using Python?

• import sqlite3 # Establish a connection to the database conn = sqlite3.connect('database.db') # Create a cursor object cursor = conn.cursor() # Execute a SQL query to create the table create_table_query = '''CREATE TABLE table_name ( column1 datatype, column2 datatype, ... )''' # Replace table_name, column1, column2, and datatype with your own values cursor.execute(create_table_query) # Commit the changes conn.commit() # Close the connection conn.close() import sqlite3 # Establish a connection to the database conn = sqlite3.connect('database.db') # Create a cursor object cursor = conn.cursor() # Execute a SQL query to create the table create_table_query = '''CREATE TABLE table_name ( column1 datatype, column2 datatype, ... )''' # Replace table_name, column1, column2, and datatype with your own values cursor.execute(create_table_query) # Commit the changes conn.commit() # Close the connection conn.close() import sqlite3 # Establish a connection to the database conn = sqlite3.connect('database.db') # Create a cursor object cursor = conn.cursor() # Execute a SQL query to create the table create_table_query = '''CREATE TABLE table_name ( column1 datatype, column2 datatype, ... )''' # Replace table_name, column1, column2, and datatype with your own values cursor.execute(create_table_query) # Commit the changes conn.commit() # Close the connection conn.close()

• Here is an example code snippet to create a table in SQLite using Python: import sqlite3 # Establish a connection to the database conn = sqlite3.connect('database.db') # Create a cursor object cursor = conn.cursor() # Execute a SQL query to create the table create_table_query = '''CREATE TABLE table_name ( column1 datatype, column2 datatype, ... )''' # Replace table_name, column1, column2, and datatype with your own values cursor.execute(create_table_query) # Commit the changes conn.commit() # Close the connection conn.close()

How do you update data in a SQLite table using Python?

• Use the INSERT statement in SQL with the SET and WHERE clauses to update data in a SQLite table using Python.

• Use the DELETE statement in SQL with the SET and WHERE clauses to update data in a SQLite table using Python.

• Use the SELECT statement in SQL with the SET and WHERE clauses to update data in a SQLite table using Python.

• Use the UPDATE statement in SQL with the SET and WHERE clauses to update data in a SQLite table using Python.

What is the purpose of the 'commit' method in SQLite?

• The purpose of the 'commit' method in SQLite is to delete data from the database.

• The purpose of the 'commit' method in SQLite is to save changes made to the database.

• The purpose of the 'commit' method in SQLite is to retrieve data from the database.

• The purpose of the 'commit' method in SQLite is to create a new database.

What is the difference between 'fetchone' and 'fetchall' methods in SQLite?

• The 'fetchone' method retrieves a single column, while the 'fetchall' method retrieves all the columns.

• The 'fetchone' method retrieves the first tuple, while the 'fetchall' method retrieves the last tuple.

• The 'fetchone' method retrieves all the remaining tuples, while the 'fetchall' method retrieves a single tuple.

• The 'fetchone' method retrieves a single tuple, while the 'fetchall' method retrieves all the remaining tuples.

How do you delete a table in SQLite using Python?

• cursor.execute('REMOVE TABLE table_name')

• Here is an example code snippet to delete a table in SQLite using Python: import sqlite3 # Establish a connection to the SQLite database conn = sqlite3.connect('database.db') # Create a cursor object cursor = conn.cursor() # Execute the SQL command to delete the table cursor.execute('DROP TABLE table_name') # Commit the changes conn.commit() # Close the connection conn.close()

• cursor.execute('DELETE TABLE table_name')

• conn.execute('DELETE TABLE table_name')

What is the purpose of the 'rollback' method in SQLite?

• The purpose of the 'rollback' method in SQLite is to create a backup of the current database state.

• The purpose of the 'rollback' method in SQLite is to undo changes made in the current transaction and restore the database to its previous state.

• The purpose of the 'rollback' method in SQLite is to permanently delete all data in the database.

• The purpose of the 'rollback' method in SQLite is to merge changes from multiple transactions into a single transaction.

How do you close a SQLite database connection in Python?

• connection.close()

• connection.terminate()

• connection.disconnect()

• connection.end()