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2025-01-19 08:26本頁(yè)面
【導(dǎo)讀】JSP是由SunMicrosystems公司倡導(dǎo)、許多公司參與一起。建立的一種動(dòng)態(tài)網(wǎng)頁(yè)技術(shù)標(biāo)準(zhǔn)。JSP技術(shù)有點(diǎn)類似ASP技術(shù)，它是在傳統(tǒng)的網(wǎng)頁(yè)HTML. 文中插入Java程序段和JSP標(biāo)記，從而形成JSP. 用JSP開(kāi)發(fā)的Web應(yīng)用是跨平臺(tái)的，即能在Linux下運(yùn)行，也能在。其他操作系統(tǒng)上運(yùn)行。JSP技術(shù)使用Java編程語(yǔ)言編寫(xiě)類XML的tags和。scriptlets，來(lái)封裝產(chǎn)生動(dòng)態(tài)網(wǎng)頁(yè)的處理邏輯。JSP將網(wǎng)頁(yè)邏輯與網(wǎng)頁(yè)設(shè)計(jì)和顯示分離，支。持可重用的基于組件的設(shè)計(jì)，使基于Web的應(yīng)用程序的開(kāi)發(fā)變得迅速和容易。1999年9月推出的，12月又推出了規(guī)范。規(guī)范的征求意見(jiàn)稿也已出臺(tái)。JSP頁(yè)面由HTML代碼和嵌入其中的Java代碼所組成。用程序的開(kāi)發(fā)需要JavaServlet和JSP配合才能完成。相比ASP/PHP的局限性是顯而易見(jiàn)的。臺(tái)服務(wù)器到無(wú)數(shù)臺(tái)服務(wù)器，Java顯示了一個(gè)巨大的生命力。裝載時(shí)自動(dòng)創(chuàng)建，完成會(huì)話期管理。結(jié)束，被稱為一個(gè)會(huì)話。session對(duì)象，直到客戶關(guān)閉瀏覽器后，服務(wù)器端該客戶的session對(duì)象才取消，2．創(chuàng)建一個(gè)Cookie對(duì)象，調(diào)用Cookie對(duì)象的構(gòu)造函數(shù)可以創(chuàng)建Cookie。
【正文】 ization of relational database system (DBMS), which was originally by Microsoft, and Ashton Sybase Tate three panies and joint development, launched in 1988, the first OS / 2 version. 2 and relational database management system (RDBMS) function: Maintaining the relationship between database data, Ensure the correctness of the data storage, When a system fault, all data recovery to ensure consistent done some condition 3, RDBMS: SQL Server, Oracle, DB / 2, Sybase Informix, 4 and amplified RDBMS (File based) : Foxpro, Access Second, SQL Server 2021 version 1 and SQL Server 2021 mon version: 1)Enterprise Edition 2)Standard version 3)Personal Edition 4)Developer Edition SQL Server features With the integration of the Inter: SQL Server 2021 database engine prehensive support XML Language, creating take (extensible Markup Language), that the user can easily be database data released to the Web page. Scalability and usability: Can span from running Windows 95, 98 / the laptop to run Windows 2021 largescale multiple processors etc. Various platforms. In addition, to jointly Server, etc, the support index view that SQL Server 2021 enterprise edition can upgrade to the largest Web site desired performance level. Enterprise databases functions: SQL Server 2021 distributed query can quote from different database data, and these are pletely transparent to users, Distributed database will ensure that any distributed data update integrity, Copy can enable us to maintain multiple data available, the user can work independently, and then will be done by modified merged into the database, SQL Server 2021 relational database engine can fully protect data integrity, still can be modified database management concurrent cost to a minimum. Easy to install, deployment and use: SQL Server 2021 by a series of management and development tools, these tools at multiple sites on SQL Server installation, deploy, manage and use more easily. Developers can more quickly deliver SQL Server applications and requires only the least installation and management can achieve these applications. Data warehouse: The data warehouse is SQL Server 2021 contains for analysis and summary data analysis on online analytical processing tools. This function only in Oracle and other more expensive DBMS. SQL Server 2021 new features Fully expanded the SQL Server performance, reliability and usability. Increases the range of functions, specific as follows: In the aspect of relational database Graphics management enhancement The bination of enhanced database server SQL Server 2021 tools, and utilities 1, enterprise management, service management 3, 4, event detection query parsers 5 and 6, the input and output data work, server client to use tools, tools Inter use online documentation enterprise management Enterprise Management is based on a new called Microsoft Management Console (r) of public Management Microsoft Server Management environment, it is the SQL Server 2021 in one of the most important Management tools. Enterprise management can not only configuration system environment and management, but also because it SQL Server can cascade form to list all the SQL Server object, so all the SQL Server object of establishment and management can be acplished by it. Service Manager (up) Service SQL Server service manager is in practical work when the Server is most practical program, service management is to start, stop, and continue to suspend the realtime database Server service, the service provided types include: SQL Server, SQL Server proxy, Microsoft search and distributed coordination, etc.
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