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

What is matrix addressing mode, What is Matrix Addressing Mode. Ans. M...

What is Matrix Addressing Mode. Ans. Matrix Addressing Mode: The arrangement which needs the fewest address lines is a square array of n rows and n columns for a whole memory

Multisim simulation file, Build the circuit using the Asynchronous Counter ...

Build the circuit using the Asynchronous Counter Technique with JK FF and relevantgates capable of executing the counting sequence as {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}Simulate the cir

Password cracking, Hashed strings can often be deciphered by 'brute forcing...

Hashed strings can often be deciphered by 'brute forcing'. Bad news, eh? Yes, and particularly if your encrypted passwords/usernames are floating around in an unprotected file some

Name some multimedia applications, Illustrate what are the Multimedia appli...

Illustrate what are the Multimedia applications Multimedia comprise the use of a computer to present: - Text - Video - Graphics - Sound - Animation In an inte

Implementation for the prime machine, Write an implementation for the Prime...

Write an implementation for the Prime machine (de?ned at the end of the assignment sheet). Provide a suitable invariant and variant for any loop you use. Provide comments in your m

How can i make text in a cell display in multiple lines, When entering word...

When entering word into the cell, press Alt-Enter to insert a line break. When you do so, Excel will automatically give text wrapping to the cell. To reformat existing cells s

What is metropolitan area network, Q. What is Metropolitan Area Network? ...

Q. What is Metropolitan Area Network? Metropolitan Area Network (MAN):  It is privately or public owned communication system that naturally covers a complete city. Speed is abo

What is switched mode power supply, Q. What is Switched Mode Power Supply? ...

Q. What is Switched Mode Power Supply? SMPS is the unit into which electric supply from the mains is connected to your PC and this supplies DC to internal circuits. It is more

Define colspan and rowspan, Q. Define Colspan and Rowspan? Now let's se...

Q. Define Colspan and Rowspan? Now let's see how to work with COLSPAN (Column Span) and ROWSPAN (Row Span). If we want cell containing Ajay in Figure to be extended to the next

Computer organization, using one-address instructions,write a program to co...

using one-address instructions,write a program to compute X=A-BxC

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