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

Explain macro definition and call, Explain Macro definition and call. ...

Explain Macro definition and call. Macro: The assembly language programming frequently finds this necessary to repeat certain piece of code several times during the course of

Ai6301 - building blocks and techniques used in ai, The princess (or princ...

The princess (or prince if you're female) has been captured by the Evil Dragon and held prisoner in a tower. The tower is also surrounded by a maze to keep out the riff-raff. You

Classification according to part of instruction and data, Classification ac...

Classification according to part of instruction and data: According to the parts of instruction and data, following parts are identified under this classification: Scal

stores on each line a part number, Make a file "parts_inv.dat" that stores...

Make a file "parts_inv.dat" that stores on each line a part number, cost, and quantity in inventory, e.g.: 123 5.99 52 456 3.97 100 333 2.22 567 Use fscanf to read this infor

Internal structure of agents - artificial intelligence, Internal Structure ...

Internal Structure of Agents: We have looked at agents in terms of their external influences and behaviors: they put in from the surroundings and perform rational actions to a

Simplify the expressions using boolean postulates, Simplify the given expre...

Simplify the given expressions using Boolean postulates XY + X‾Z‾  + XY‾Z (XY + Z) Ans. XY + X‾Z‾ + XY‾Z (XY + Z) = XY + X‾Z‾ + XY‾Z (XY + Z) = XY + X‾Z‾  + XXYY‾Z

What is the role of certifying authority, What is the Role of Certifying Au...

What is the Role of Certifying Authority? A certificate authority is a body, that is either public or private, that seeks to fill the requirement for trusted third-party servic

Concept development journal, The Concept Development journal must contain: ...

The Concept Development journal must contain: An introductory paragraph detailing what conclusions you have drawn from your research and how you intend to proceed. This should b

Read after write and write after write - data hazards, RAW  and WAW - Data ...

RAW  and WAW - Data hazards: RAW (read after write) - j tries to read a source before i writes it, hence j wrongly gets the old value .This is the most usual type of

Describe about minicomputers, Q. Describe about Minicomputers? Minicomp...

Q. Describe about Minicomputers? Minicomputers, developed in the early 1960s, are high-performance, general-purpose multi user computers. These are also designed for real-tim

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