Write a short note on qbe, Database Management System

Assignment Help:

Write a short note on QBE?

Stands for "Query By Example." QBE is a feature involved along with various database applications which gives user-friendly techniques of running database queries. Typically without QBE, a user must write input commands using right SQL (Structured Query Language) syntax. This is a standard language in which nearly all database programs support. Therefore, if the syntax is slightly incorrect the query might return the wrong results or may not run at all. The Query By Example feature gives a simple interface for a user to enter queries. Instead of writing an whole SQL command, the user can just fill in blanks or select items to describe the query she needs to perform. For instance, a user may need to select an entry from a table called "Table1" with an ID of 123. Using SQL, the user would required to input the command, "SELECT * FROM Table1 WHERE ID = 123". The QBE interface might permit the user to just click on Table1, type in "123" in the ID field and click "Search." QBE is offered along with most database programs, by the interface is often different among applications. For example, Microsoft Access has a QBE interface known as "Query Design View" which is totally graphical. The phpMyAdmin application used along with MySQL, offers a Web-based interface whereas users can choose a query operator and fill in blanks with search terms. Whatever QBE implementation is given with a program, the purpose is the similar - to make it easier to run database queries and to prevent the frustrations of SQL errors


Related Discussions:- Write a short note on qbe

Multi-key file organisation, Multi-Key File Organisation In this part, ...

Multi-Key File Organisation In this part, we will introduce two basic file Organisation schemes that permit records to be accessed by more than one key field, therefore, allowi

Describe analysis of access paths, Describe analysis of access paths To...

Describe analysis of access paths To describe analysis of access paths, consider an example of the design of a company's employee skills database. A part of the object model fr

What is a view, What is a view? How it is related to data independence? ...

What is a view? How it is related to data independence? A view might be thought of as a virtual table, that is, a table that does not really exist in its own right but is inste

Explain er model, Question 1 Explain ER model Question 2 What are the...

Question 1 Explain ER model Question 2 What are the characteristics of a computer provided information? Question 3 What are facts and guidelines to be considered when se

What do you understand by raid, What do you understand by RAID? Explain RA...

What do you understand by RAID? Explain RAID Level 4 and Level5? RAID - It is stands for Redundant Array of Inexpensive Disks (as named by the inventor), or alternatively Re

What is the use of group by clause, What is the use of group by clause?  ...

What is the use of group by clause?  Group  by  clause  is  used to apply  aggregate  functions  to a  set  of  tuples. The attributes given in the group by clause are used to

The proliferation of object-oriented methods, The Proliferation of Object-O...

The Proliferation of Object-Oriented Methods The first few years of the 1990s saw blossoming of around fifty various object oriented methods. This proliferation is a sign of g

Example on relational database schema, Question: The following relation...

Question: The following relational database schema corresponds to a part of a database used by the Registry Department of a university. DEPARTMENT (d#, d-name, head-of-dept)

Prepare entity relationship diagram for models your design, This project re...

This project requires you to perform a systems analysis and then design a system solution using database software. Ace Auto Dealers specializes in selling new vehicles from Subaru.

Describe graphical user interface, Describe Graphical User Interface? ...

Describe Graphical User Interface? Graphical User Interfaces (GUIs) - A GUI typically displays a schema to the user in diagrammatic form. The user can then specify a query th

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