What is cursor, Computer Engineering

Assignment Help:

What is Cursor?

Cursor is a database object used by applications to manipulate data in a set on a row-by- row basis, instead of the typical SQL commands that operate on all the rows in the set at one time.

In order to work with a cursor we require performing some steps in the following order:

Declare cursor

Open cursor

Fetch row from the cursor

Process fetched row

Close cursor

Deallocate cursor

 


Related Discussions:- What is cursor

How to create an html document, An HTML document can be created by using an...

An HTML document can be created by using any HTML editor or text editor such as notepad etc. STEPS FOR CREATING A SIMPLE HTMLPROGRAM   1. Go to Start -> Programs->A

Explain direct addressing mode with example, Q. Explain Direct Addressing M...

Q. Explain Direct Addressing Mode with example? Direct Addressing Mode A direct operand signifies to contents of memory at an address referred by the name of the variable.

Explain simple interfacing, Q. Explain Simple Interfacing? The followin...

Q. Explain Simple Interfacing? The following is a sample of the coding, used for procedure interfacing: PUBLIC CUROFF             _TEXT SEGMENT WORD PUBLIC 'CODE'

Collision free network, Hello Sir/Mam, Actually i am trying to implement th...

Hello Sir/Mam, Actually i am trying to implement the concept of MAC layer protocols in NS2..... But unfortunately i am not able to do that.... and not even able to get the code fo

Mips assembly language equivalents , MIPS' native assembly code only has tw...

MIPS' native assembly code only has two branch instructions, beq and bne, and only one comparison instruction, slt. Using just these three instructions (along with the ori instruct

Digital systems and microprocessors, Your logic function for this assignmen...

Your logic function for this assignment is to be derived from your own student number. The number 1224583 will be used as an example as to how you should derive your function and e

Which of the memories stores the most number of bits, Which of the memories...

Which of the memories stores the most number of bits ? Ans. most number of bits stores in 32M x 8 As 2 5 x 2 20   = 2 25 Therefore 1M = 2 20 = 1K x 1K = 2 10 x 2 10

Explain clearly the difference between j-cuts and l-cuts, Question: (a)...

Question: (a) Explain clearly the difference between J-cuts and L-Cuts. (b) What is the function of the rate stretch tool? (c) What's the difference between an Image Matt

What do you mean by lock synchronization, Q. What do you mean by Lock Synch...

Q. What do you mean by Lock Synchronization? Lock Synchronization: In this method contents of an atom are updated by requester process and sole access is granted before atomic

Requirements of decision support system, Q. Requirements of decision suppor...

Q. Requirements of decision support system? a) Fast computation A decision maker is able to perform a large number of computations very quickly and that too at a low cost

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd