what is petya

What is quartz? (What is quartz ?)Quartz is a full-featured, open source job scheduling system that can be integrated, or used along side implements ally any J2EE or j2se application-from the smallest stand-alone application to the largest e-commerce system. quartz can be us

A thread is sometimes called a lightweight process, which is a smaller unit of activity than a process, and it is an execution path in the process. A process can have multiple execution paths that are threads.The main differences between threads and processes:1. A thread is an integral part of a process, a process can

together , then stores the next column of data, and so on. ; Smith,jones,johnson; Joe,mary,cathy; 40000,50000,44000;This is just a simplified statement.In the relational database domain, except the traditional Oracle, SQL Server, MySQL and other row-type database. There is a growing interest in the Data Warehouse-listed database.Two-control1 rows are more suitable for OLTP, querying all

Overview Functions are the basis for modular program design. To compile complex Ajax applications, you must have a deeper understanding of functions. Functions in JavaScript are different from other languages. Each function is maintained and run as an object. Through the properties of function objects, you can easily assign a function to a variable or pass the function as a parameter. Before proceeding, let's take a look at the usage syntax of the fun

Q: What is a bitmap? What is a vector graph? What does it matter? A: Almost every person who just contact graphic design will ask this question, from my experience to this road, I think even if you do not understand what

the destination server, so the proxy server does not have any reverse meaning, and the following diagram shows why the reverse proxy is called reverse.By the way, from the structural point of view, the right side of the proxy and reverse proxy for a bit, the original proxy Server client from the intranet. It and the proxy server form a LAN, and the reverse proxy. The proxy server and the server are made up of a group. So from the perspective of struc

an object is like the relationship between a mold and a casting, and the instantiation of a class is the object, and the abstraction of a class object is the classes. The class describes a set of objects that have the same attributes (attributes) and the same behavior (methods). Above is probably their definition, per

// Is bigger smarter? (What is the bigger the smarter ?) // PC/ultraviolet A IDs: 111101/10131, popularity: B, success rate: high level: 2 // verdict: accepted // submission date: 2011-10-10 // UV Run Time: 0.032 S // copyright (c) 2011, Qiu. Metaphysis # Yeah dot net // [Problem description] // some people think that the larger the elephant

This article mainly introduces what is PEAR? What is PECL? Two confusing concepts in PHP are explained. This article explains their differences in a concise language. For more information, see Overview PEAR and PECL are two things you know when you are new to PHP, but few people seem to be familiar with it. In addi

an object is like the relationship between a mold and a casting, and the instantiation of a class is the object, and the abstraction of a class object is the classes. The class describes a set of objects that have the same attributes (attributes) and the same behavior (methods). Above is probably their definition, per

Dojo what can be done?? 1 , making it easier for developers to add dynamic capabilities to Web pages, or to use Dojo in other JavaScript-enabled environments;2 , using the components provided by Dojo, developers can improve the usability and interactivity of WEB applications;3 , Dojo largely masks differences between browsers, so developers don't have to worry about whether Web pages are available in certain browsers;4 , you can also write a command-l

Embedded system:Embedded system refers to the computer as a part of a special system exists, embedded in a larger, dedicated system of computer systems, is a application-centric, computer technology-based, software hardware can be cut, function, reliability, cost, volume, power consumption has strict requirements of the special computer system.Embedded operating system:Embedded operating system is a kind of

What is the function of the millet roaming card? Virtual Card Services You have heard, the Millet roaming card is a virtual card services, it is not necessary to purchase the entity SIM card can be in our travel abroad to enjoy the convenient mobile Internet services, is no

What is the difference between a good programmer and a general programmer ?, What is the difference between programmers and programmers? Among the programmers I have seen in ordinary times, I think they can be divided into five categories based on their encoding capabilities: 　　 1. Beibei typeThe Beibei contestants ar

the trend is to install the operating system using UEFI mode.What is the difference between UEFI and bios? What are the advantages?As a successor to the traditional BIOS (Basic input/output System), UEFI has a number of features that are not available to predecessors, such as a graphical interface, a variety of operations, the ability to embed hardware drivers,

What is a project training course, what is the difference with professional courses, and who can study practical training courses? CSTP training products are designed according to the recruitment requirements of software enterprises for software engineers. Through investigation of Representative software enterprises, w

What is the role of zookeeper,zookeeper and how does it collaborate with Namenode and Hmaster? In the absence of contact with zookeeper students, may have these questions. Here's a summary for you.first, what is zookeeperZooKeeper, the zoo administrator, is the administrator

Alipay What is the day of payment of Word-of-mouth? Alipay Day is the day Alipay paid the day is a new payment treasure to launch a select side of the big food activities, 28th each month are paid PO word-of-mouth Rights Day, the day of the event, agreed to pay the real name of the real user in the "Word-of-mouth-f