Are the following two statements same ? Why/Why not ?

(i) pd.read_csv('zoo.csv', sep = ',')

(ii) pd.read_csv('zoo.csv')

How are following two codes similar or different ? What output will they produce ?

(i)

df = pd.read_csv("data.csv", nrows = 5) 
print(df)

(ii)

df = pd.read_csv("data.csv")
print(df)

What is the difference between following two statements ?

(i)

df.to_sql('houses', con = conn, if_exists = 'replace')

(ii)

df.to_sql('houses', con = conn, if_exists = 'replace', index = False)

Consider following code when conn is the name of established connection to MySQL database.

Cars = {'Brand': ['Alto', 'Zen', 'City', 'Kia'],
        'Price': [22000, 25000, 27000, 35000]}
df = pd.DataFrame(Cars, columns= ['Brand', 'Price']) 
df.to_sql('CARS', conn, if_exists = 'replace', index = False)

What will be the output of following query if executed on MySQL ?

SELECT * from CARS ;