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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
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
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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
Transcribed Image Text: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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