欢迎进入Oracle社区论坛,与200万技术人员互动交流 >>进入 ZackUrlocker在北京召开的一个小型记者会上表示:软件产业正在经历的革命绝非从单一产品向整体解决方案的转变,而是基于互联网的软件应用服务的兴起。同时,ZackUrlocker表示:即将发布的MySQL5.1将
欢迎进入Oracle社区论坛,与200万技术人员互动交流 >>进入
ZackUrlocker在北京召开的一个小型记者会上表示:软件产业正在经历的革命绝非从单一产品向整体解决方案的转变,而是基于互联网的软件应用服务的兴起。同时,ZackUrlocker表示:即将发布的MySQL5.1将增加对XML的支持。
ZackUrlocker完全同意“Oracle是波音747,MySQL是丰田汽车”这个说法,“但要知道,丰田汽车可比波音747多得太多; 很多人都可以购买一辆丰田汽车,但绝大多数的人不需要买一架波音747。”
Web应用起飞?
ZackUrlocker认为,MySQL最大的优势,便是基于网络的在线应用服务,表明公司的业务模式顺应了软件产业的变革趋势。
美国市场调研机构comScoreNetworks提供的报告显示,2007年1月,全球15岁及以上使用互联网的人数达到了7.47亿; 而据诺基亚日前预言,2007年年底前全球手机用户总数将达到30亿,到2010年将进一步增至40亿。“如果把手机也看成是网络的终端,那么,未来的软件应用一定是基于Web的。”
开放源代码和软件在线服务是推动软件产业变革的两股重要力量。salesforce.com提供在线客户关系管理(CRM)服务; 此外,两周前RedHat发布的RedHatExchange(红帽交换计划),联合了众多开放源代码的商业智能、数据库、文件管理、ERP、CRM以及系统监测软件供应商,共同推动开放源代码和在线服务的发展。
据Gartner称,基于Web的软件在企业软件中的比例将由2005年的5%提高到2011年的25%。
潜力中国
去年,MySQL通过与万里开源公司合作的方式进入中国市场,并很快成立了中国研发中心和中国培训中心。ZackUrlocker对CNET说,MySQL把中国市场看成“潜力巨大”的市场,目前MySQL的目标和任务主要是树立形象、站稳脚跟、培训人才。
据CNET了解,RedHat是MySQL在操作系统领域最大的合作伙伴,但在中国,MySQL并没有和中国本土Linux公司中科红旗展开合作,ZackUrlocker说:“我不了解中科红旗”。
对此,万里开源高级市场经理蒋顺利表示:这其实是国内软件公司普遍存在的一个大问题; 如果不走出国门,很难与国外的数据库厂商达成合作。
MySQL1995年成立于瑞典,目前在22个国家开展业务,全球范围内大约有300多名全职员工。作为一家私有企业,MySQL并不对外公开宣布财政收入,但据国外媒体报道,通过商用版MySQL数据库软件的销售与服务,MySQL2006年获得大约5000万美元收入。据ZackUrlocker透露,公司计划于今年、最迟明年首次公开发行股票。
有消息称,在过去两年里,MySQL在所有开发者使用的数据库中获得了25%的市场份额。
自下而上的征程
在中小企业市场里如鱼得水的微软 SQL Server,这回遇到了对手。ZackUrlocker说:“全美的新创企业中,100%选用MySQL而不是以往的专属软件如DB2、Oracle或是SQL Server。
他认为:DB2或是Oracle等很难把自己缩小到能够适应中小企业的应用特征。而对以“适用于中小型企业应用”的微软SQLServer,ZackUrlocker表示:从Windows平台看,SQLServer是最好的; 但MySQL的优势是跨平台,无论Windows还是苹果的Macintosh,凡是你能够想得到的操作系统,都可以运行MySQL。
不过,觊觎高端通常都是后来者最终要走的路,MySQL也不例外。ZackUrlocker说:“在商业智能、文件管理、CRM等领域,所有开源产品都已经是基于MySQL的; 不仅如此,如果看到Web2.0已经融入到企业应用的趋势,我坚信MySQL将是适用于数据中心、管理型应用、大规模应用的软件。
不过,ZackUrlocker承认:无论SQLServer还是Oracle或DB2,都是非常优秀的数据库软件。

MySQL is an open source relational database management system, mainly used to store and retrieve data quickly and reliably. Its working principle includes client requests, query resolution, execution of queries and return results. Examples of usage include creating tables, inserting and querying data, and advanced features such as JOIN operations. Common errors involve SQL syntax, data types, and permissions, and optimization suggestions include the use of indexes, optimized queries, and partitioning of tables.

MySQL is an open source relational database management system suitable for data storage, management, query and security. 1. It supports a variety of operating systems and is widely used in Web applications and other fields. 2. Through the client-server architecture and different storage engines, MySQL processes data efficiently. 3. Basic usage includes creating databases and tables, inserting, querying and updating data. 4. Advanced usage involves complex queries and stored procedures. 5. Common errors can be debugged through the EXPLAIN statement. 6. Performance optimization includes the rational use of indexes and optimized query statements.

MySQL is chosen for its performance, reliability, ease of use, and community support. 1.MySQL provides efficient data storage and retrieval functions, supporting multiple data types and advanced query operations. 2. Adopt client-server architecture and multiple storage engines to support transaction and query optimization. 3. Easy to use, supports a variety of operating systems and programming languages. 4. Have strong community support and provide rich resources and solutions.

InnoDB's lock mechanisms include shared locks, exclusive locks, intention locks, record locks, gap locks and next key locks. 1. Shared lock allows transactions to read data without preventing other transactions from reading. 2. Exclusive lock prevents other transactions from reading and modifying data. 3. Intention lock optimizes lock efficiency. 4. Record lock lock index record. 5. Gap lock locks index recording gap. 6. The next key lock is a combination of record lock and gap lock to ensure data consistency.

The main reasons for poor MySQL query performance include not using indexes, wrong execution plan selection by the query optimizer, unreasonable table design, excessive data volume and lock competition. 1. No index causes slow querying, and adding indexes can significantly improve performance. 2. Use the EXPLAIN command to analyze the query plan and find out the optimizer error. 3. Reconstructing the table structure and optimizing JOIN conditions can improve table design problems. 4. When the data volume is large, partitioning and table division strategies are adopted. 5. In a high concurrency environment, optimizing transactions and locking strategies can reduce lock competition.

In database optimization, indexing strategies should be selected according to query requirements: 1. When the query involves multiple columns and the order of conditions is fixed, use composite indexes; 2. When the query involves multiple columns but the order of conditions is not fixed, use multiple single-column indexes. Composite indexes are suitable for optimizing multi-column queries, while single-column indexes are suitable for single-column queries.

To optimize MySQL slow query, slowquerylog and performance_schema need to be used: 1. Enable slowquerylog and set thresholds to record slow query; 2. Use performance_schema to analyze query execution details, find out performance bottlenecks and optimize.

MySQL and SQL are essential skills for developers. 1.MySQL is an open source relational database management system, and SQL is the standard language used to manage and operate databases. 2.MySQL supports multiple storage engines through efficient data storage and retrieval functions, and SQL completes complex data operations through simple statements. 3. Examples of usage include basic queries and advanced queries, such as filtering and sorting by condition. 4. Common errors include syntax errors and performance issues, which can be optimized by checking SQL statements and using EXPLAIN commands. 5. Performance optimization techniques include using indexes, avoiding full table scanning, optimizing JOIN operations and improving code readability.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

SublimeText3 Chinese version
Chinese version, very easy to use

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function