Information Techonology

Hadoop is the open source implementation of MapReduce, a powerful tool designed for deep analysis and transformation of very large data sets. Hadoop is the system that allows unstructured data to be distributed across hundreds or thousands of machines forming shared nothing clusters, and the execution of Map/Reduce routines to [...]

In B2C e-commerce, businesses sell directly a diverse group of products and services to customers. In addition to pure B2C e-commerce players such as Amazon.com, and hepsiburada.com other traditional businesses have entered the virtual marketplace by establishing comprehensive web sites and virtual storefronts. In these cases, e-commerce supplements the traditional [...]

A honey pot is a computer system on the Internet that is expressly set up to attract and “trap” people who attempt to penetrate other people’s computer systems. Generally, a honeypot consists of data (for example, in a network site) that appears to be a legitimate part of the site [...]

Indexes are special lookup tables that the database search engine can use to speed up data retrieval. Simply put, an index is a pointer to data in a table. An index in a database is very similar to an index in the back of a book. For example, if you [...]

In Networks communication, a topology is a usually representation and description of the arrangement of a communication network, as well as its nodes and connecting lines or medium. There are two types ways of describing network geometry: the physical topology and the logical or signal topology. The physical topology of [...]

Each instruction needs data on which it has to perform the specified operation. The data may be in the accumulator, GPR (general purpose registers) or in some specified memory location. The techniques of specifying the address of the data are known as addressing modes. The important addressing modes are as [...]

Now a day’s Cloud Computing is a very cost-effective platform for providing business or consumer IT services over the Internet. However, cloud Computing have some additional risk because necessary services are generally outsourced to a third party providers, who owns the infrastructure and which makes it harder to maintain data [...]

One of the most popular file systems , originally developed at Sun Microsystems operating system Solaris, transferred to other platforms which caused a surge diametrically different emotions developers from violent admiration and jubilation to the opposite – anger and rage. Let’s try to get acquainted with the point of view [...]

Automatic traffic monitoring and surveillance are important for road usage and congestion control. For Intelligent Transportation systems (ITS), various sensors have been employed to estimate traffic parameters for updating traffic information. Magnetic loop detectors have been the most used technologies, but their installation and maintenance are inconvenient and might become [...]