What is the Server ?
All advanced database management systems include some kind of service applications as part of the database system. For example, to use the SQL Server database, you must have an application called "SQL Server Engine" running on the computer. This application is a windows service (a hidden application that will start automatically when your computer starts and keep running always).
Your program (software) which need to access the database will not access the database file directly. Instead, your program will communicate with the database service application. It is the responsibility of this service to communicate with the database file and execute your commands.
When you install SQL Server on your computer, the SQL Server service will be automatically installed on your computer. When you write code to access database, you just write the ADO.NET code using C#, VB.NET etc. The .NET Framework will execute your ADO.NET code to communicate with the database server and database server will communicate with the database file to execute. All these happens without your knowledge. All you do is, write ADO.NET code to execute queries and you will get the results back.
To make your ADO.NET code work, the database service must be running. If somebody stop the service, your code will fail.
In case of file based database systems like MS Access or FoxPro, there is no database service involved. Your code will directly communicate with the database file.
Popular Posts
-
JSP pages are high level extension of servlet and it enable the developers to embed java code in html pages. JSP files are finally compiled ...
-
The SQL SELECT INTO statement is used to select data from a SQL database table and to insert it to a different table at the same time. The g...
-
SYMBOLIC CONSTANTS OR MACRO: In this #define is a macro used for a constant value to be assigned in the program. for example: pi its value i...
-
package interfaceexercise; // Define an interface with three abstract methods. // Any class that implements this interface has to // impleme...
-
Introduction: In this exercise, you will exercise the concept scope variable. Steps to follow: 1. Write ScopeOfVariable.java as shown in Cod...
-
<%@page contentType="text/html" import="java.util.*" %> <!-- http://www.roseindia.net/jsp --> ...
-
CONSTANTS,VARIABLES AND KEYWORDS: CONSTANTS: Two types of constants those are: a)primary constants b)secondary constants a)In primary consta...
-
MouseMove, MouseDown and MouseUp Events Lets check out the Command Button's MouseMove, MouseDown and MouseUp events. We will do that lik...
-
Data Adapter Configuration Wizard Generating DataSet To create a DataSet, select Data->Generate DataSet from the main menu. From the dial...
No comments:
Post a Comment