Explain a)parameter style b)connection() function c) Connection Object methods d) CursorObjects, Cursor Objects attributes and methods.

a) Parameter Style: This refers to the convention used to represent variables in SQL statements. Different databases use different styles. For example, in SQLite, you use "?" to represent variables, while in MySQL, you use "%s".

b) connection() function: This is a function used in Python's DB-API to establish a connection with the database. It takes several parameters such as the name of the database, username, password, host, etc., and returns a connection object.

c) Connection Object methods: These are methods that can be called on a connection object. Some of the common methods include:

• commit(): This method is used to commit any pending transaction to the database.
• rollback(): This method is used to roll back to the start of any pending transaction.
• close(): This method is used to close the database connection.

d) Cursor Objects: These are used to execute SQL commands in a database. A cursor object is created using the cursor() method of the connection object.

Cursor Object attributes and methods include:

• execute(): This method is used to execute a SQL command.
• fetchone(): This method is used to fetch the next row of a query result set.
• fetchall(): This method is used to fetch all rows of a query result set.
• rowcount: This is an attribute that returns the number of rows that the last execute() method produced or affected.
• close(): This method is used to close the cursor object.