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Cyber Safety Manual

on August 28, 2020

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Cyber Safety Handbook For Students Of Secondary And Senior Secondary Students.

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Assignment Chapter - 1 Database Concepts (Class 12th)

Q1. Consider the following Employee table: Table Name: Employee The primary key of this table is Employee_ID and Manager_ID is a foreign key that references Employee_ID. Write SQL commands for the following: (a) Create the above table. (b) Insert values as shown above. (c) Delete the Employee having Employee_ID 1217. (d) Update the salary of “Amyra” to 40000. (e) Alter the table Employee so that NULL values are not allowed for Age column. (f) Write a query to display names and salaries of those employees whose salary are greater than 20000. (g) Write a query to display details of employees who are not getting any bonus. (h) Write a query to display the names of employees whose name contains “a” as the last alphabet. (i) Write a query to display the name and Job title of those employees whose Manager_ID is 1201. (j) Write a query to display the name and Job title of those employees whose Manager is “Amyra”. (k) Write a query to display the n...

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Cyber Safety Manual

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