globally unique identifier

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Modify Startup menu options in Windows 7

Recently, due to work testing needs, multiple operating systems (XP, VISTA, WIN7) have been installed on one computer ), however, window7 only displays startup options such as "previous versions of the system" and needs to be modified to facilitate

FTP File Upload

Uploading files is a common function. A module for uploading images was created some time ago. I started using the shared folder method, and later found that this method is not very good. Therefore, the system was decisively killed and later used

Let's pull the Code together-Hibernate's various primary key generation policies and configuration details, hibernate

Let's pull the Code together-Hibernate's various primary key generation policies and configuration details, hibernate1. assigned A primary key is generated by an external program and must be specified before saving. Hibernate does not maintain

JavaScript algorithm for generating GUIDs

The globally unique identifier (guid,globally unique Identifier) is also known as the UUID (universally unique Identifier).A GUID is a numeric identifier generated by the algorithm with a binary length of 128 bits. The format of the GUID is

PhpGUID generation functions and Classes

This article mainly introduces how to use php to generate guids, using functions and classes to generate guids, and describes in detail what are the advantages of guids and guids, for more information, see This article mainly introduces how to use

SqlServer database data unit type

The bit data type is an integer, and its value can only be 0, 1, or null. This data type is used to store data with only two possible values, such as Yes, No, True, False, On, or Off. note: a data type that saves a lot of space. If you can meet your

Sqlserver Field Types

The bit data type is an integer, and its value can only be 0, 1, or null. This data type is used to store data with only two possible values, such as Yes, No, True, False, On, or Off. note: a data type that saves a lot of space. If you can meet your

Python generates a unique ID using the UUID library

Overview:UUIDis a 128-bit globally unique identifier, typically represented by a 32-byte string. It can guarantee the uniqueness of time and space, also known as the GUID, all called: uuid--Universally Unique IDentifier Python called UUID guid--

What are MBR and GPT partition tables? Detailed description of MBR and GPT partition tables

Detailed description of MBR and GPT partition tablesBefore the new hard disk (not initialized) is mounted to the system, it must be aligned for Partitioning. The hard disk partition initialization format includes MBR and GPT. Of course, there is a

Global Unique identifier GUID

A. Guid conceptGUID: The globally unique Identifier (globally unique identifier) is also known as the UUID (universally unique Identifier). A GUID is a 128-bit numeric identifier produced by a particular algorithm that indicates the uniqueness of

PHP GUID generation functions and class _php instances

I. Introduction of GUIDs GUID: The globally unique Identifier (globally unique identifier) is also known as the UUID (universally unique Identifier). A GUID is a 128-bit numeric identifier produced by a particular algorithm that indicates the

Introduction to COM programming have to read the article: The first part what is COM, how to use COM

Original: Http://www.codeproject.com/Articles/633/Introduction-to-COM-What-It-Is-and-How-to-Use-ItThe purpose of this article is to provide programming guidance to programmers who have just contacted COM and to help them understand the basic

Detailed description of SQL server Stored Procedures called by ASP-attached instances-

The ado document creates a new Parameter object using the specified property. Syntax Set parameter = command. CreateParameter (Name, Type, Direction, Size, Value) Return Value Returns the Parameter object. Parameters Name (optional) is a string

Connmgrmapurl function of GPRS

Recently, I am working on GPRS. I am not very clear about some of the functions. I will record them one by one ....   Online materials: Connmgrmapurl () allows the system to select the most suitable network connection to access the URL through the

A Preliminary Study on COM technology (I)

1. com is a better C ++1. What is com?2. From C ++ to DLL and then to com2.1 C ++2.2 DLL2.3 comIi. com Basics1. Basic knowledge of COM1.1 return value hresult1.2 first recognized IDL1.3 iunkown Interface2. a relatively simple com2.1 interface. h

J2EE includes the following technologies: Technical Terms

EJB: Enterprise JavaBeans Enterprise JavaBean ComponentIDL: Interface Definition LanguageJMS: Java Message ServiceJNDI: Java Naming and Directory Interface Java Naming Directory InterfaceRMI: Remote Method Invocation remote method callJTA: Java

. Net interoperability-basic C #-based interface tutorial

Address: http://blog.163.com/mad010@126/blog/static/12237155200841645952814/ [Document Introduction] C # not only supports the. NET platform, but also supports the com platform. To support COM and. net, C # contains a

Fundamentally avoid uploading files with the same name [Asp.net]

Recently, I was working on a website to regularly generate pages. One problem occurred is that the file name of the generated page is duplicated. At the beginning, I named it by time, that is, when to generate it. Its name is the time of the moment

Python uses UUID library to generate unique ID

Python official Doc: 20.15. uuid-UUID objects according to RFC 4122 UUID algorithm Introduction: A Universally Unique IDentifier (UUID) URN Namespace Overview: UUID is A 128-bit globally Unique IDentifier, it is usually represented by a 32-byte

UUID in Python

UUID is a 128-bit globally unique identifier, usually represented by a 32-byte string. It can ensure the uniqueness of time and space, also known as guid, all called: UUID -- universally unique identifier in Python UUID guid -- globally unique

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