Data File Handling — Computer Science STD 12 Science — Question

What kind of data gets stored in cookies and how is it useful? 

Name the few tools & resources for students with disabilities which can help student to learn the things easily.

Write the python script to display all the records from the table emp using for loop.

What are the positive effects of technology?

Consider the following table Student & Stream.

Table: Student

Admno	Sname	Class	Sec	Fee	Mobile	Area	S_ID
1001	RAMESH	XII	A	2500	987654321	Madipur	10
1078	KRISHNA	XII	B	2400	999911111	Jawala Heri	30
1006	FARDEEN	XII	C	2600	987654321	Paschim Puri	40
1004	SUBHAM	XII	A	2500	963025874	Madipur	20
1029	KRITIKA	XI	C	2700	987456210	Madipur	30
1008	SAMEEKSHA	XII	A	2450	987123456	Mangol Puri	20
1025	SALMA	XII	B	2580	998877445	Madipur	30
1036	AMANDEEP	XII	B	2600	999333555	Khyala	40
1037	TEJAS	XI	C	2650	987951357	Paschim Puri	40
1029	HIMANSHU	XII	A	2750	951369874	Jawala Heri	10

Table : Stream

S_ID	Stream_name
10	MEDILCAL
20	NON MEDICAL
30	COMMERCE WITH MATH
40	COMMERCE WITH IP
50	HUMANITIES

Write SQL commands for the statements (a) to (h) on the table: Student and Stream
(a) Display class and total fee collected from each class.
(b) Display admission no, students name and stream name.
(c) Display all the student details who have taken Commerce Stream.
(d) Count number of students who have opted for HUMANITIES stream.
(e) Display information of commerce with ip students whose name start with ‘S’. Arrange the record by admission number.
(f) Display details of all students who are in the MEDICAL stream.
(g) Display total fee of ‘Non-Medical’ Student.
(h) Change the name of the Column Sname to Student_Name.

Distinguish between LAN and WAN.

Write SQL queries for (i) to (iv) and find outputs for SQL queries (v) to (vii), which are based on the tables.

Table: Trainer

TID	Tname	City	HireDate	Salary
101	Sunaina	Mumbai	1998-10-15	90000
102	Anamika	Delhi	1994-12-24	80000
103	Deepti	Chandigarh	2001-12-21	82000
104	Meenakshi	Delhi	2002-12-25	78000
105	Richa	Mumbai	1996-01-12	95000
106	Maniprabha	Chennai	2001-12-12	69000

Table: Course

CID	CNAME	FEES	STARTDATE	TID
C201	AGDCA	12000	2018-07-02	101
C202	ADCA	15000	2018-07-15	103
C203	DCA	10000	2018-10-01	102
C203	DDTP	9000	2018-09-15	104
C205	DHN	20000	2018-08-01	101
C206	O LEVEL	18000	2018-07-25	105

(a) Display the Trainer Name, City and Salary in descending order of their hire date.

(b) To display the TNAME and CITY of Trainer of joined the institute in the month of December 2001.

(c) To display TNAME, HIREDATE,CNAME, STARTDATE from tables TRAINER and COURSE whose FEES is less than or equal to 10000

(d) To display number of trainer from each city

(e) select tid, tname,from trainer where city not in(‘delhi’,’mumbai’);

(f) select distinct tid from course;

(g) select tid , count (*), min(fees) from course group by tid having count(*)>1;

(h) Select count(*),sum(fees) from course where startdate <’2018-09-15’;

Write a Python program to check if a given key already exists in a dictionary.

Write SQL statements to do the following:

(a) Using the three separate words "We,""study,"and "MySQL,"produce the following output: "We study MySQL "

(b) Use the string "Internet is a boon "and extract the string "net ".

(c) Display the length of the string "Informatics Practices ".

(d) Display the position of "My "in "Enjoying MySQL ".

(e) Display the name of current month.