Sql Delete Rows Command

23:13:00 SQL Tutorial

Sql Delete Rows Command

In this post Sql Delete Rows Command , we will have idea about deletion of data from sql tables. Sometimes we need to delete data from sql tables, there might be so many reasons for this deletion.

For sql delete rows, we have to use delete command of sql.

Sql Delete Rows Command

Delete Command

Delete Command is used to delete records from a database table, we can delete any number of records at a time in a single Delete Command. Delete Command of SQL uses Delete keyword.

The general syntax of Delete Command

Delete table name [where condition];

Example
Delete employee;

This will delete all the records from employee table.
We can delete particular rows or records of a table.

Delete employee where ename=’Smith’;
This will delete record of Smith only.

We can use multiple conditions in Delete Command.
Suppose we want to delete records of all that employees whose city is Chandigarh and name is Smith.

The SQL delete statement will be like this:
Delete employee where ename=’Smith’ and ecity=’Chandigarh’;

This was all about sql delete rows command .

Top 101 Digital Electronics Interview Questions and Answers for freshers and experienced

The idea behind the post Top 101 Digital Electronics Interview Questions and Answers for freshers and experienced is to give an idea of questions to viewers of this post. Top 101 Digital Electronics Interview Questions and Answers for freshers and experienced are beneficial for students as well as candidates appearing for interviews.

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Top 101 Digital Electronics Interview Questions and Answers for freshers and experienced

Define OR gate?

Draw truth table for two input AND gate?

Define de-multiplexers?

What are shift registers?

What is ring counter?

Define magnitude comparator?

Define Priority encoder?

Draw master slave J-k Flip flop and explain its operation?

Draw the logic diagram of UP/DWON Asynchronous counter and explain its working?

Explain the application of shift registers?

Explain Binary to gray number conversion?

Explain Gray to Binary number conversion?

Explain why NAND gate is called as Universal logic gate?

Explain the function of flip-flop?

What is the key feature of excess-3 code?

Express octal number in binary (7041)

Draw half adder circuit and Explain its operation?

Draw logic diagram of 4 inputs multiplexer and explain its working?

Draw logic diagram of BCD to decimal decoder and Explain its operation?

Draw logic diagram of decimal to BCD encoder and Explain its functions?

Explain the operation of D-Flip flop using truth table and waveforms?

What is binary Number system

What is the application of seven segment Decoder Driver?

What IC is commonly used for seven segment Decoder Driver and Decoder Counter?

Draw the logic symbol and Truth Table for X-OR gate?

What are Universal Gates?

What is the difference between positive logic and Negative logic?

Which number system is generally used for assembly language programming.

What is the difference between Half Adder and Full adder.

What is parity bit.

Draw the diagram for 4-Bit Synchronous Binary Counter. Explain its working with the help of timing diagram.

Draw the diagram for SR Flip-Flop . Explain its working with the help of Truth Table.

Draw the diagram for Full-Adder. Explain its working. Draw the truth table.

Explain why NAND and NOR gates are called Universal Gates.

Implement OR and AND gates using NAND and NOR gates.

What is the difference between combinational and sequential Circuit?

Draw thw symbol for JK Flip-Flop and D- Flip-Flop

Draw the logic symbol and T.T. for NAND gate?

Draw the circuit diagram for HALF ADDER. Explain its working with the help of a truth table.

What is multiplexer. Draw the logic diagram for 8:1 MUX .Explain its working.

Draw the diagram for 7-segment Decoder Driver. Explain its working.

Draw the logic diagram for decimal (0-9) to BCD decoder .Write its application.

Draw the diagram for Master-Salve J-K Flip-Flop. Explain working with the help of truth table.

Draw the diagram for Universal Shift Register. Explain its working.

Define synchronous sequential circuit.

The sum of binary number 1111 and 1001 is…..

A….Flip-Flop uses both positive edge and negative edge of clock for data transfer.

Give two applications of Flip-Flops.

What is meant by modulus of a counter?

What is buffer register.

Differentiate between serial data and parallel data.

Define accuracy of D/A converter.

A D/A converters has a supply voltage of 15v.If the number of bits is 6,What voltage does 1 bit represent.

Design a mode 8 synchronous counter and Explain its working.

Draw a K-Map for the following functions of 4 variables and use it to reduce the function realize the reduce function by using Nand gates.

F=sigma(1,3,7,11,15)+d(0,2,5)

What is Master slave Flip-Flop.

What is Seven segment display.

What is Weighted resistor D/A converter

Convert (10110110) binary to gray code.

Convert (10111011) graycode to binary.

Draw symbol of OR, NOT, AND,NAND,NOR and XOR gates.

Explain full subtracter with neat diagram.

Design a decoder for BCD to Decimal .

Explain Ring counter.

Draw logic diagram of 4 bit parallel in serial out register.

Explain the operation of J-K Flip-Flop.

Design a 6 4:1 MUX using 16:1 and 4:1 MUX

What is parity ?

Draw truth table of OR gate.

What is digitization ?

State Demorgan's first theorem.

Define LATCH.

What is Buffer ?

Find 2's compliment of 11010101.

What is meant by Positive Logic?

What is PISO ?

How many Flip Flops are required for a decade counter?

What is difference between Asynchronous and Synchronous Counter

Draw & Explain Asynchronous MOD-5 counter.

What are application of Shift Registers? Explain SISO Register.

Difference between Analog and Digital signals

What is a Priority encoder

What are error detection codes?

What are universal gates? Why these are called as universal ?

Add these two binary numbers 101010 & 110101.

Draw truth table & schematic of half adder circuit & Explain.

What is basic difference between a multiplexer & an encoder?

Explain 4:1 multiplexer.

Draw block schematic of 2 bit comparator circuit & Explain with the help of truth table.

Using K-map simplify Y= sigma(0,2,3,5,7,11,13) and realize it using NAND gate only.

What is Race-Around condition & how it is eliminated using JK Master Slave Flip-Flop

What is A.L.U?

Explain all modes of shift register & Draw PISO shift register.

What is parity & how it is used in error detection code?

Explain 4 bit parallel binary adder

Draw a BCD to 7-segment decoder?

What is function of stroke in multiplexer? Draw 4:1 multiplexer with truth table.

What is difference between sequential & computational circuits? Draw logic diagram of mode 7 counter.

What is a flip flop? Show how D-flip flop is made by SR flip flop with truth table.

calculate 2's complement of a decimal no. 16

Summary

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Top BEST Baby Names for Hindu boy Latest 2016

22:30:00 Baby Names

Top BEST Baby Names for Hindu boy Latest 2016

In this post " Top BEST Baby Names for Hindu boy Latest 2016", we are listing Top BEST Baby Names for Hindu boy Latest 2016.

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Wrapping it up

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