Technical Interview Questions and Answers :: TCS

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A table contains data like this Employee_type No_of_Employees --------------------- -------------- A 10 B 20 C 30 B 25 A 40 D 30 Write a query to print total no. of employees in each employee type.

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Answer:

SELECT SUM(No_of_Employees) as TotalEmp, Employee_type from EmpTable Group by Employee_type

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132 / 158

Access modifier in c and java?

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133 / 158

What is output (x-a)(x-b)(x-c).......(x-z)=?

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Answer:

Its output will be zero.





Because(x-x)=0





product of any term with zero is 0.

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134 / 158

What is difference between i++ and ++i?

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135 / 158

What are the difference between TCP and UDP?

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136 / 158

What is RDBMS ? Can we establish relation between 2 tables without foreign key?

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137 / 158

Write a query to join the table itself.

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138 / 158

Write a query for fetching the current time of system.

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139 / 158

What is pointer, function pointer, volatile variables?

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140 / 158

What is Object Oriented DBMS?

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