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2. Consider the following PATIENTS table:

Table: PATIENTS
Patient_ID Patient_Name Age Disease Doctor
P001 Rahul 20 Fever Dr. Sinha
P002 Maya 34 Diabetes Dr. Ahmed
P003 Aman 27 Flu Dr. Sinha
P004 Riya 15 Asthma Dr. Gupta
P005 John 40 Diabetes Dr. Ahmed
Now, write SQL commands for the following:

(a) Create a PATIENTS table under the Hospital database.
(b) Insert a new patient “Priya”, age 25, Flu, doctor Dr. Sinha, Patient_ID P006.
(c) Show names of all patients suffering from Diabetes.
(d) List all details of patients being treated by Dr. Sinha.

(e) Update the age of patient “Rahul” to 21.
(f) Delete all records of patients younger than 18.

CODE CHECK Century #Critical Thinking
21 st
Skills
In a class, the following data shows the number of hours students spend on homework each week:
Student A (4 hours), Student B (6 hours), Student C (2 hours), Student D (5 hours) and
Student E (3 hours). Answer the following based on the given data:

(a) What is the average number of hours students spend on homework?
(b) Which student spends the most and the least time on homework?
(c) If a new student, Student F, reports spending 7 hours on homework weekly, how would this
change the average?

JOB JUNCTION
A career in databases offers roles like database administrator, developer or analyst, managing
and analysing data for organisations across many industries.

PEDAGOGY PATHWAYS

« Explain to students the different operators with different examples.
« Explain to students the various types of SQL commands.

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