disadvantages of fet

Our company's database is all using the GUID key, many people are accustomed to use the INT key. So, here's a summary of the two data types of the master key for a comparison.Advantages of using the INT key:1, need very small data storage space, only need 4 byte.2, insert and UPDATE operations use INT for better performance than GUIDs, so using int will improve the performance of your application.3, index and join operations, INT is the best performance.4, easy to remember.5, support through the

Tags: style blog http color ar using SP strong dataOur company's database is all using the GUID key, many people are accustomed to use the INT key. So, here's a summary of the two data types of the master key for a comparison.Advantages of using the INT key:1, need very small data storage space, only need 4 byte.2, insert and UPDATE operations use INT for better performance than GUIDs, so using int will improve the performance of your application.3, index and join operations, INT is the best per

Article Title: analyze the advantages and disadvantages of Ext3 and Reiserfs file systems in Linux. 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. A file system is a directory structure that includes storage devices or partitions. Generally, an application storage device can contain one or more file systems. Gener

Advantages and disadvantages of C LanguageAdvantages and disadvantages of C language: 1. process-oriented languageC language is a process-oriented language. Here, you can create a process or function to execute their tasks. Process-oriented languages are easy to learn because they follow algorithms to execute your statements. To develop programs in a process-oriented language, You need to draw/write algorit

ECB mode650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/83/87/wKioL1d1OMShlESDAACHAtER2cY549.png "title=" 1.png " alt= "Wkiol1d1omshlesdaachater2cy549.png"/>Encryption in ECB mode650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M01/83/89/wKiom1d1OMXif9HiAACElYGQIdM425.png "title=" 2.png " alt= "Wkiom1d1omxif9hiaacelygqidm425.png"/>The decryption of ECB modeCommon in symmetric ciphers are the ECB, CBC, CFB, OFB, and CTR models. Let's take a look at the characteristics of these pa

non-blocking I/O, transmit/listen events to control the execution processNodejs encountered I/O event will create a thread to execute, and then the main thread will continue to execute, therefore, take the action of profile to trigger an I/O event, will immediately execute the action of taking timeline, two actions parallel execution, if each need 1S, then the total time is 1S. After their I/O operations are completed, an event, profile, and timeline are emitted, and the event agent receives an

Advantages and disadvantages of creating closures using JavaScript This article mainly introduces the advantages and disadvantages of the two methods for creating a closure in JavaScript and the related information for difference analysis. For more information, see There are usually two common methods for creating closures in JavaScript. Constructor method: ? 1 2 3 New function (){ Var v

The reason why Android mobile phone operating systems have received so wide attention is that their performance is essential. Here, we will analyze the Android performance from its advantages and disadvantages and the application advantages in development, so that you can further master this operating system. Overview of Android Defects Android glossary Overview Introduction to the correct implementation of Android read/write files Android full s

advantages and disadvantages of JSONP1. Advantages1.1 It is not limited by the same Origin policy as the AJAX request implemented by the XMLHttpRequest object, Jsonp can cross the homologous strategy;1.2 Its compatibility is better, can run in the older browser, do not need XMLHttpRequest or ActiveX support1.3 The result can be returned by calling callback after the request is complete. The permission of the callback method is given to the caller. Thi

analysis method, we propose some models, implement these models as basic Java objects, and then write the basic DAO (Data Access Objects) interface, and give the DAO implementation of Hibernate. The DAO class implemented by the hibernate architecture implements conversion and access between Java classes and databases, and finally manages struts and hibernate with spring.Summary of advantages and disadvantages:1, based on annotations, stuts2 although

Collect the advantages and disadvantages of PHP with MYSQL and MSSQL. collect the advantages and disadvantages of PHP with MYSQL and MSSQL. Reply to discussion (solution) Php5.3 used to be the sameAfter php5.3, the combination with MSSQL has been constrained, making it more difficult Is it because MYSQL was acquired by ORACLE! It's strange that you have such questions. Of course, php works with m

Undoubtedly, the security of current information is becoming more and more important. Therefore, the system administrator tries to encrypt the data as much as possible. Even so, the "Data Encryption" plan is not the best practice, especially when backing up data. Before discussing the advantages and disadvantages of encrypting backup data, I need to point out that there are many different forms of encryption for backup data. The term backup encryption

provide services for residential users. The ONU optical network unit is set on the roadside, that is, the electrical signals from ONU are sent to users, generally, videos are transmitted over coaxial cables and telephones are transmitted over twisted pair wires. The ONU of FTTB is located in the distribution box of the building. It is mainly used in integrated buildings, remote medical care, distance education, and large entertainment venues to serve large and medium-sized enterprises and busin

Questions about the use and disadvantages of AsyncTask, questions about asynctask (1) Introduction 1. AsyncTask is a lightweight asynchronous task class. It encapsulates Handler and Thread internally, so that the data of sub-threads can be easily transmitted to the UI Thread and updated. however, it is not suitable for time-consuming tasks. for time-consuming tasks, we recommend that you use a thread pool. (1)Key APIs 1. Three parameters: Params, P

The development of optical fiber access networks is very rapid and has been widely used in various fields. The advantages and disadvantages of optical fiber access networks and ADSL access are analyzed in detail below. The rapid development of the Internet has led to the further prosperity of the Internet bar industry. The access methods of Internet cafes are also different, and network networking solutions are also varied. At present, the internation

Three Modes and their advantages and disadvantages of LVS, and three modes of lvs LVS Classification LVS-DR: Direct routing, which is the most common method. All ctor and RealServer are in the same physical network (switch) and have only one Nic. LVS-NAT: address translation, packet back and forth through NAT translation, so Director Server (that is, LVS Server) will become a system bottleneck. In NAT mode, two IP addresses of different CIDR blocks

This article mainly introduces the scenarios and advantages and disadvantages of js closures, which are very detailed. For more information, see. Previous Code: // Function afunction a () {var I = 0; // function bfunction B () {alert (++ I);} return B ;} // function cvar c = a (); c (); Code features: 1. function B is nested in function;2. function a Returns function B.In the Code, when function a's internal function B is referenced by a variable c

started. Disadvantages: 1. Poor concurrent processing capability: Because PHP had no threads or process functions at the time, to achieve concurrency, you need to borrow a multi-path model. PHP uses the select model. It is troublesome to implement it. It may be because of the level issues that often occur in my program, leading to missing catch. Let's talk about Python: Advantages: 1. Various crawler frameworks for convenient and efficient download

With the rapid development of technology, new JSP technologies are also emerging. In order to learn and work, we will briefly introduce the JSP architecture, JSP development tools, Web servers, and their disadvantages. JSP architecture: Struts: Like many Apache projects such as Tomcat and Turbine, Struts is an open-source software. This is a major advantage of struts, allowing developers to gain a deeper understanding of its internal implementation me

, with more rapid responsiveness.The principle of 3.ajax is "data on demand", minimizing redundancy requests and reducing server load.? Now almost all B/s software projects will add Ajax to improve user experience4 Disadvantages of theAjax :1. Destroy the normal behavior of the browser back button. After the page is dynamically updated, the user cannot return to the state of the previous page.2. Using JavaScript as an Ajax engine, JavaScript compatibi