docsis 3 1 technology

can have multiple, ''can have only one empty string). After creating a table, add a unique index: create unique index name on table name (column name) ? Composite Index: The index applies to multiple columns. Alter table name add index name (column name 1, column name 2 ...) ? Explain: Understand the execution of SQL statements ? 2. query index: desc table name (the disadvantage of this method is that the index name cannot be displayed), show inde

methodThe function is to get the value of the property variable, the Get method name begins with "Get", followed by the name of the instance variable, and generally has the following format:Public Return }For the instance variable radius, declare its Get method as follows: Public int Getradius () { returnSet methodThe function is to modify the value of the property variable, the Set method name begins with "set", followed by the name of the instance variable, and generally has the following f

root data can be divided into two types: kernel-level and user-level. To better understand these two levels, you must master the relationship between the Win32 sub-system API and the internal API (native API. The location of hooks of different levels is explained, and the relationship between modules and their dependencies on Windows 2 k systems are described.Figure 2　　The main difference in implementation is that the kernel-level interception engine is implemented using the kernel mode driver,

SRS premium sound technology Overview SRS is an American audio technology manufacturer that designs and manufactures a series of audio solutions to enable the listener to hear the natural sound of restoration on a variety of audio devices. At present, more than half of global TVs use SRS technology to modify sound quality. SRS premium so

detection, we can completely fill the split part into a monochrome for subsequent recognition. However, before the real recognition starts, we still need to perform some operations on these images. 1. The scaling operation scales the image to be recognized to a specified size. a scaling operation can ensure that the image details are not lost but as small as possible to accelerate the recognition speed, I use 24x24 here, mainly because the verificati

1. Preface The emergence of automatic switching optical network ASON is a historic breakthrough in the development of the transmission network. ASON, also known as intelligent optical network, is a network that uses an independent control plane to dynamically Configure connection management. The core technologies of the ASON architecture include the signaling protocol, routing protocol, and link resource management. The signaling protocol is used to e

Public-oriented mobile technology: comprehensive introduction to Android (1) Enter the mobile world of Android and build your first application The mobile field is a promising field. For developers who want to enter this field, Android is an exciting platform. This series will first introduce Android and specifically target Java™The developer made changes. We will understand the three-tier version of Andro

Csdn intel multi-core computing technology edition (1) Thanks to celineshi, I am also a moderator of the Intel multi-core computing technology edition. Not long after I took office, I always wanted to add the most valuable post of this version (MVP ?) Put it together and give it to everyone. After the drag and drop, I finally spent two nights reading all the p

An overview of a series of essays and the resulting backgroundown development of the Bean John Blog backup expert software tools since the advent of more than 3 years, by the vast number of bloggers writing and reading enthusiasts love. At the same time, there are some technical enthusiasts consulting me, the software is a variety of practical functions of how to achieve.The software is used. NET technology

Recently, I have accumulated some experience and experience in using C # To implement web reports. I have also written an introduction Article, but some netizens have not made it clear. I think that I want to use a single article to illustrate that Web report development will inevitably be big and empty, and will not fall into the category. Therefore, I think that every article only pays attention to one aspect of Web report development. Multiple Articles form a series of web report development

To achieve high reliability and redundant deployment, most enterprise networks and their data centers today span multiple physical sites in different geographic locations and deploy similar services on these sites, perform layer-2 communication between these sites. To achieve dynamic resource allocation and management between sites, virtual machines must be freely migrated between data centers. The virtual machine migration process is transparent to users and cannot change the IP address, theref

to exchange the cache. In a producer-consumer model, some threads load synchronization when the cache is exchanged between the producer and the consumer. To achieve the optimal performance increase for a given number of cores, the synchronization load must be kept to a minimum. This ensures that the producer and consumer threads have a considerable number of time constants to complete each incremental task before switching the cache. Example 8-1 desc

can be explicitly controlled by the user. In DM, a transaction ends (normal or abnormal) in the following situations: (1) When the attribute of a connection is set to automatic submission, each statement is submitted; (2) When a COMMIT/ROLLBACK statement is encountered, a transaction is committed/rolled back; (3) When the automatic DDL submission switch of the system is enabled (

Bluetooth NFC Bluetooth Bluetooth Low Energy RFIDCompatible ISO 18000-3 Active Active Standardization Organization ISO/IEC Bluetooth SIG Bluetooth SIG Network standards ISO 13157 etc. IEEE 802.15.1 IEEE 802.15.1 Network Type Point-to-Point WPAN WPAN Encryption Not with RFID Available Available

network device supports the IPv6 protocol in IPoE mode, it must obtain the address of the RG device and automatically configure it. The layer-3 Protocol sensing function of the Access Node device includes the IPv6 protocol in some regions, ICMPv6 Protocol packet processing, security features for IPv6 services, etc ). 2.2 tunnel mode Tunneling is a way to transmit data between networks by using an interconnected network infrastructure. Tunnel transmis

Microsoft CryptoAPI encryption technology (1)Author: cuick Download sample source code In this age of information explosion, we have to be vigilant against information security. Encryption, as a way to ensure data information security, has attracted more and more attention.Next, I will share my superficial understanding of Microsoft CryptoAPI with you. What's wrong with this. I. encryption method: At the be

Detailed analysis of LTE system switching technology (1) I. Switching Technology of TD-LTE System 1. Overview of TD-LTE Switching As a TD-SCDMA System of TD-LTE evolution technology, the fast hardware switching method can be used to realize the switching between different

Guo Bin, Professor of the Department of television engineering, Beijing Broadcasting Institute MPEG is a motion image Expert Group (Moving Picture Experts)The abbreviation of group is essentially named 29th of the Joint Technical Committee (JTC) 1 of the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC ).Sub-committee working group 11th, namely ISO/IECJTC1/sc29/wg11, founded in 1988. Its task

1 Introduction At present, the telecom operation mode is facing a huge change. The traditional telecom business is undergoing profound changes in terms of concepts, technologies, businesses, investment, management and services. The new communication mode will be unified to the IP address. The VoIP (Voice over IP) uses the speech compression encoding technology, the grouping real-time transmission

Article Title: backdoor technology and rootkit tool-Knark Analysis and Prevention (1 ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Abstract: This article discusses some backdoor technologies that are often used after succ