i) Write the datatype required for all the fields of table SCHOOL. ii) To display TEACHERNAME, PERIODS of all teachers whose periods are less than 25. iii) To display CODE, TEACHERNAME & SUBJECT from tables SCHOOL.

i) Write the datatype required for all the fields of table SCHOOL. ii) To display TEACHERNAME, PERIODS of all teachers whose periods are less than 25. iii) To display CODE, TEACHERNAME & SUBJECT from tables SCHOOL.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Please solve this fast.

Q. Consider the following tables SCHOOL Write SQL commands for the following statements.
SCHOOL
CODE
TEACHERNAME
SUBJECT
DOJ
PERIODS
EXPERIENCE
1001
RAVI
ENGLISH
12/03/2000
24
10
1009
PRIYA
PHYSICS
03/09/1998
26
12
1203
LISA
ENGLISH
09/04/2000
27
5
1045
YASH
MATHS
24/08/2000
24
15
1123
GAGAN
PHYSICS
16/07/1999
28
3
1167
HARISH B
CHEMISTRY 19/10/1999
27
1215
UMESH
PHYSICS
11/05/1998
22
16
i) Write the datatype required for all the fields of table SCHOOL.
ii) To display TEACHERNAME, PERIODS of all teachers whose periods are less than 25.
iii) To display CODE, TEACHERNAME & SUBJECT from tables SCHOOL.
iv) To display the details of all the teachers in the descending order of their EXPERIENCE.
v) To display the details of ENGLISH teachers only.
vi) To display the details of all the teachers whose SUBJECT is CHEMISTRY & EXPERIENCE is
less than 10.
vii) Update the SCHOOL table by decreasing 2 PERIODS of all the teachers.
viii) To display the TEACHERNAME and EXPEIRENCE of all the employees after incrementing
the experience as twice the given value.
ix) Delete all the records whose DOJ is before 31st July 1998
x) Delete all the records of the table SCHOOL

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