myStr = "MISSISSIPPI"
print(myStr[:4] + "#" + myStr[-5:])
MISSI#SIPPI
MISS#SIPPI
MISS#IPPIS
MISSI#IPPIS
myStr[:4] extracts the first 4 characters, which are "MISS".myStr[-5:] extracts the last 5 characters, which are "SIPPI"."#" in between, resulting in "MISS#SIPPI".\[ \begin{array}{|c|c|c|c|} \hline \textbf{S\_id} & \textbf{S\_name} & \textbf{Address} & \textbf{S\_type} \\ \hline S001 & Sandhya & Rohini & Day Boarder \\ S002 & Vedanshi & Rohtak & Day Scholar \\ S003 & Vibhu & Raj Nagar & NULL \\ S004 & Atharva & Rampur & Day Boarder \\ \hline \end{array} \]
\[ \begin{array}{|c|c|c|} \hline \textbf{S\_id} & \textbf{Bus\_no} & \textbf{Stop\_name} \\ \hline S002 & TSS10 & Sarai Kale Khan \\ S004 & TSS12 & Sainik Vihar \\ S005 & TSS10 & Kamla Nagar \\ \hline \end{array} \]
The SELECT statement when combined with \(\_\_\_\_\_\_\) clause, returns records without repetition.
In SQL, the aggregate function which will display the cardinality of the table is \(\_\_\_\_\_\).