微软称将推出SQL Server 2008 R2的完整预览版,该版本是微软近两年来对其旗舰数据库平台的首次重要升级。微软官方在上周举行的SQL Server专业协会的年度峰会上表示,这一完整预览版有望在明年上半年推出。 微软表示,除了引入新增的自助式商业智能功能外,新
微软称将推出SQL Server 2008 R2的完整预览版,该版本是微软近两年来对其旗舰平台的首次重要升级。微软官方在上周举行的SQL Server专业协会的年度峰会上表示,这一完整预览版有望在明年上半年推出。
微软表示,除了引入新增的自助式商业智能功能外,新推出的SQL Server将以两种数据包的形式推出:一个是Data Center版本,另一个就是Parallel Data Warehouse,二者代表了目前微软最具扩展性的数据库。
Gartner分析师Mark Beyer称,由于甲骨文和IBM不断为其数据库产品添加新的商业智能和数据库存功能,微软不得不进而采取行动。在关系数据库服务器市场上,微软作为供应商保持在第三的位置。虽然微软的市场份额没有什么变化,但是其市场的增长速度却比甲骨文和IBM的要快。
Beyer说:“微软似乎是依靠小业务的积累成就其市场的增长。因为小业务成本低,技术要求也简单,数据管理起来也不复杂。”
SQL Server 2008 R2十一月的CTP将为微软新的PowerPivot技术提供首次预览,而且还可以让商业智能数据集合起来方便大家在微软SharePoint服务器上共享。
PowerPivot旨在让商业用户用新的内存分析引擎创建自己的Excel商业智能方案,微软称这样的方案将处理数百万行数据。微软SQL Server产品管理总监Fausto Ibarra称,用户可按照新的方式操作数据,以便创建商业智能方案,然后将方案发布到SharePoint与其他用户开展合作。
Gartner分析师Beyer称,PowerPivot技术有助于微软向用户推广商业智能,而且还有助于微软清除堆积如山的Excel数据。Beyer认为使用Excel这类强大而简易的工具时必须清除自己的数据库存,这也是整理好商业智能数据的一个步骤。
同样是在新的CTP中,开发人员和管理人员有能力集中管理SQL Server数据库的各个组,以便监控性能并将数据库从一个服务器转移到另一个服务器。
Ibarra说:“这是一个我们称之为应用和多服务器管理的新功能,该功能可以让IT人员更有效地管理自己的架构,减少了服务器巩固项目中成本和精力的投入。”

MySQLhandlesconcurrencyusingamixofrow-levelandtable-levellocking,primarilythroughInnoDB'srow-levellocking.ComparedtootherRDBMS,MySQL'sapproachisefficientformanyusecasesbutmayfacechallengeswithdeadlocksandlacksadvancedfeatureslikePostgreSQL'sSerializa

MySQLhandlestransactionseffectivelyusingtheInnoDBengine,supportingACIDpropertiessimilartoPostgreSQLandOracle.1)MySQLusesREPEATABLEREADasthedefaultisolationlevel,whichcanbeadjustedtoREADCOMMITTEDforhigh-trafficscenarios.2)Itoptimizesperformancewithabu

MySQLisbetterforspeedandsimplicity,suitableforwebapplications;PostgreSQLexcelsincomplexdatascenarioswithrobustfeatures.MySQLisidealforquickprojectsandread-heavytasks,whilePostgreSQLispreferredforapplicationsrequiringstrictdataintegrityandadvancedSQLf

MySQL processes data replication through three modes: asynchronous, semi-synchronous and group replication. 1) Asynchronous replication performance is high but data may be lost. 2) Semi-synchronous replication improves data security but increases latency. 3) Group replication supports multi-master replication and failover, suitable for high availability requirements.

The EXPLAIN statement can be used to analyze and improve SQL query performance. 1. Execute the EXPLAIN statement to view the query plan. 2. Analyze the output results, pay attention to access type, index usage and JOIN order. 3. Create or adjust indexes based on the analysis results, optimize JOIN operations, and avoid full table scanning to improve query efficiency.

Using mysqldump for logical backup and MySQLEnterpriseBackup for hot backup are effective ways to back up MySQL databases. 1. Use mysqldump to back up the database: mysqldump-uroot-pmydatabase>mydatabase_backup.sql. 2. Use MySQLEnterpriseBackup for hot backup: mysqlbackup--user=root-password=password--backup-dir=/path/to/backupbackup. When recovering, use the corresponding life

The main reasons for slow MySQL query include missing or improper use of indexes, query complexity, excessive data volume and insufficient hardware resources. Optimization suggestions include: 1. Create appropriate indexes; 2. Optimize query statements; 3. Use table partitioning technology; 4. Appropriately upgrade hardware.

MySQL view is a virtual table based on SQL query results and does not store data. 1) Views simplify complex queries, 2) Enhance data security, and 3) Maintain data consistency. Views are stored queries in databases that can be used like tables, but data is generated dynamically.


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

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

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

SublimeText3 Chinese version
Chinese version, very easy to use

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
