Tuesday, March 8, 2011

CrazyEngineers Forum - Computer Science & IT Engineering

CrazyEngineers Forum - Computer Science & IT Engineering

upload vs download bandwidth consumption

Posted: 07 Mar 2011 10:41 PM PST

One simple doubt in terms of uploading and downloading from internet..

Which Uses more bandwidth...UPLOAD OR DOWNLOAD...a content of same size..

OR IS IT MERELY THE SAME??

SQL Injection

Posted: 07 Mar 2011 10:01 AM PST

Many web developers are unaware of how SQL queries can be tampered with, and assume that an SQL query is a trusted command. It means that SQL queries are able to circumvent access controls, thereby bypassing standard authentication and authorization checks, and sometimes SQL queries even may allow access to host operating system level commands.

Direct SQL Command Injection is a technique where an attacker creates or alters existing SQL commands to expose hidden data, or to override valuable ones, or even to execute dangerous system level commands on the database host. This is accomplished by the application taking user input and combining it with static parameters to build an SQL query. The following examples are based on true stories, unfortunately.

Owing to the lack of input validation and connecting to the database on behalf of a superuser or the one who can create users, the attacker may create a superuser in your database.

More info: PHP: SQL Injection - Manual
Better Article: Understanding SQL Injection - Cisco Systems

Problems Associated With Very Large Databases

Posted: 07 Mar 2011 08:08 AM PST

I'm looking for few inputs on typical problems associated with very large database systems. My knowledge of databases is very limited and that makes me feel that as the database systems grow from 1000s of records to millions and billions of records, there must be few common problems associated with maintaining and operating these databases.

Is that true? If yes, what are those problems?

Which Is The Toughest Programming Langauge ?

Posted: 07 Mar 2011 07:55 AM PST

:cool: I am great fan of programming and some web designing! Which language is the toughest at this time ? Why do you feel?

Prevention from DDOS attack

Posted: 07 Mar 2011 12:55 AM PST

DDOS attack is one of the most deadly attack

It has many categorizes like ping of death,smurf attack etc

among all Zombie is one of the most deadliest attack, that can even force you to shutdown your server

Let us discuss various preventive or control measures that can be done when encounter any such attack on your server
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