Data Structure — Computer Science STD 12 Science — Question

Consider the following DEPT and WORKER tables. Write SQL queries for (i) to (iv) and find outputs for SQL queries (v) to (viii):

Table: DEPT

DCODE	DEPARTMENT	CITY
D01	MEDIA	DELHI
D02	MARKETING	DELHI
D03	INFRASTRUCTURE	MUMBAI
D05	FINANCE	KOLKATA
D04	HUMAN RESOURCE	MUMBAI

Table: WORKER

WNO	NAME	DOJ	DOB	GENDER	DCODE
1001	George K	2013-09-02	1991-09-01	MALE	D01
1002	Ryma Sen	2012-12-11	1990-12-15	FEMALE	D03
1003	Mohitesh	2013-02-03	1987-09-04	MALE	D05
1007	Anil Jha	2014-01-17	1984-10-19	MALE	D04
1004	Manila Sahai	2012-12-09	1986-11-14	FEMALE	D01
1005	R SAHAY	2013-11-18	1987-03-31	MALE	D02
1006	Jaya Priya	2014-06-09	1985-06-23	FEMALE	D05

Note: DOJ refers to date of joining and DOB refers to date of Birth of workers.

(i) To display Wno, Name, Gender from the table WORKER in descending order of Wno.

(ii) To display the Name of all the FEMALE workers from the table WORKER.

(iii) To display the Wno and Name of those workers from the table WORKER who are born between ‘1987-01-01 ’and ‘1991-12-01 ’.

(iv) To count and display MALE workers who have joined after ‘1986-01-01 ’.

(v) SELECT COUNT(*), DCODE FROM WORKER GROUP BY DCODE HAVING COUNT(*)>1;

(vi) SELECT DISTINCT DEPARTMENT FROM DEPT;

(vii) SELECT NAME, DEPARTMENT, CITY FROM WORKER W,DEPT D WHERE W.DCODE=D.DCODE AND WNO <1003;

(viii) SELECT MAX(DOJ), MIN(DOB) FROM WORKER;

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Consider the following table HOSPITAL.

Table: HOSPITAL

PNo	Name	Age	Department	DateofAdm	Charges	Sex
1	Mayank	65	Surgery	23/02/2018	600	M
2	Babita	24	ENT	01/01/2019	400	F
3	Kashish	45	Orthopaedic	19/12/2018	400	M
4	Tarun	12	Surgery	01/10/2018	600	M
5	Manisha	36	ENT	12/01/2018	400	F
6	Imran	16	ENT	24/02/2018	400	M
7	Ankita	NULL	Cardiology	20/08/2018	800	F
8	Zoya	45	Gynecology	22/02/2018	500	F
9	Kush	19	Cardiology	13/01/2019	800	M
10	Shalini	31	Medicine	19/02/2018	300	F

Note: PNo is the primary key in the above table.

Write SQL commands for the statements (a) to (g) on the table HOSPITAL.

(a) To show all the information about the patients of the cardiology department.

(b) To list the names of female patients who are either in the orthopaedic or surgery department.

(c) To list the name of all the patients with their date of admission in ascending order.

(d) To display the patient’s name, charges, the age for female patients only.

(e) To count the number of patients with age > 30.

(f) To display various departments.

(g) To display the number of patients in each department.

Write a script to create a list of 10 random floating point numbers and then
(a) Find the mean of the elements present in the list (without using sum() function)
(b) Find the mean of all those elements of the list which are more than the mean calculated in 5c (above part of the question)

Write a program to create list of the random number and show the normal code and efficient code for buble sort. The program should implement through
functions.

Write a function search () to search a record in a binary file according to the student number entered by the user. Also display the message “Record not found” in case record not found in the file.

Write definition of a function EvenSum(NUMBERS) to add those values in the list of NUMBERS, which are odd on position.

What is Pandas NumPy array?

Trine Tech Corporation (TTC) is a professional consultancy company. The company is planning to set up their new offices in India with its hub at Hyderabad. As a network adviser, you have to understand their requirement and suggest them the best available solutions. Their queries are mentioned (a) to (d) below.

Block to Block distances (in Mtrs.)

FROM	To	Distance
Human resource	Conference	110
Human resource	Finance	40
Conference	Finance	80

Number of computers in each of the blocks/Center is as follows:

Human resource	25
Finance	120
Conference	90

(a) What will be the most appropriate block, where TTC should plan to install the server?

(b) Draw a block to block cable layout to connect all the buildings in the most appropriate manner for efficient communication.

(c) What will be the best possible connectivity out of the following, you will suggest to connect the new setup of offices in Bangalore with its London based office?

Satellite Link, Infrared, Ethernet cable

(d) Which of the following devices will be suggested by you to connect each computer in each of the buildings.

Switch, modem, Gateway

Write a python program to plot the grouped bar chart for the given data:

The program is to be implemented to sub plot