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

By which finders are connected, In step by step switching line finders are ...

In step by step switching line finders are connected to the (A) Calling subscriber.                   (B) Switching network. (C) Called subscriber.                    (

Explain common sub expression elimination, Explain briefly Common sub ex...

Explain briefly Common sub expression elimination of the commonly used code optimization techniques. Common sub expression elimination: In given expression as "(a+b)-(

C++ program, A palindrome is a string that reads the same from both the end...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

Determine about the stack organization, Stack Organization The CPU of t...

Stack Organization The CPU of the most computers comprises of stack or called as last-in-first-out (LIFO) list in which information is stored in such a manner that item stored

What is an interrupt, What is an interrupt?  An interrupt is an event t...

What is an interrupt?  An interrupt is an event that causes the implementation of one program to be suspended and another program to be implemented.

Vector-vector instructions-vector processing, Vector-Vector Instructions ...

Vector-Vector Instructions In this type, vector operands are fetched by the vector register and saved in another vector register. These instructions are indicated with the foll

What is an unsigned integer constant, What is an unsigned integer constant?...

What is an unsigned integer constant? An integer constant is the number in the range of - 32768 to + 32767; because an integer constant always gets two bytes in memory and in t

Explain asynchronous decade counter, Draw the circuit diagram of Asynchrono...

Draw the circuit diagram of Asynchronous decade counter and explain its working. Ans: To  design  a  circuit diagram of decade  asynchronous  counter  initially  we  dr

Unit resolution, Unit Resolution: By assuming that we knew the sentenc...

Unit Resolution: By assuming that we knew the sentence as "Tony Blair is prime minister or may the moon is made of blue cheese", is true or we later found out that the moon is

How can i delete a file, The Standard C Library function is removing. (This...

The Standard C Library function is removing. (This is thus one of the few questions in this section for which the answer is not ''It's system-dependent.'') On older, pre-ANSI Unix

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