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oracle 10g 教程从入门到精通 attachment MATLAB等数学软件专版 柯南VS基德 2012-8-13 2 2346 baiyaoqian 2015-4-19 14:15:23
[下载]Oracle Crystal Ball Fusion Edition v11.1.1.1.00 + Keygen 计量经济学与统计软件 mrjhm 2009-2-11 58 21067 wangrunhuai 2014-6-4 16:04:30
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DELETED SPSS论坛 treetty 2014-5-15 2 2003 wangguoping2013 2014-5-23 22:50:21
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分享 Oracle Eyes Resurgence
slimdell 2015-4-6 18:05
http://www.clinpage.com/article/oracle_eyes_resurgence/C10 'WE'LL BE #1' Oracle Eyes Resurgence JANUARY 30, 2009 Comments Tell a Friend Print Tags: cro , eclinical , edc Whatever happened to Oracle Clinical, the database firm’s flagship application for clinical data management? It’s still there. As we noted a few days ago on this site, some Oracle customers in the sponsor and contract research organization (CRO) community are starting to acknowledge their usage of the company’s technology. But the company doesn’t make as much noise as its competitors. Some in the industry no longer believe they need a massive, central clinical data management system. In another key market, electronic data capture, Oracle’s technology has been outflanked by smaller, more agile companies that it must have formerly viewed as irksome tse-tse flies. Fair or not, the perception in the industry is that Oracle allowed Pfizer to drive the design of its EDC solution to such a degree that few other sponsor companies or CROs wanted anything to do with it. At the corporate level, the database firm has spent several years digesting $25 billion in acquisitions in a global race for size with Germany’s SAP . Even after that spree, Oracle is one of a select number of top-tier technology firms with a pristine financial profile. Just in case any other companies catch the eye of CEO, cofounder and yachtsman Larry Ellison, Oracle has $10.7 billion in cash in the bank. A Different Game Not long ago, Oracle’s Patti Devereux Gaves rang us up to explain that the company is hardly dozing. She’s based in Connecticut; her title is senior director of product strategy. Gaves says the health care and life sciences group at Oracle has been busily building for the future, and is not ceding any territory to any competitor on any front. “We’ll be #1 or #2 soon,” she says. “We’re not ruling anything out.” Gaves notes that the company already has most of the elements of an eclinical portfolio—including EDC, data management, safety, coding, data warehouse, clinical trial management—and is considering what to do about those it lacks. It sounds like buying, building and partnering to fill out its offerings are all under consideration. With time at Medidata and Pfizer under her belt, Gaves has a uniquely well-qualified background with which to pitch in on any Oracle effort to flex its muscles. One of her early jobs was with the database firm; she returned to the company in 2008 to help it chart a sort of re-entry to the still-thriving eclinical battlefield. At this point, at the end of the first decade of the 21st century, Gaves does not see the game as being purely about EDC. Big trials, she suggests, pose larger technical challenges than just gathering clinical data. “I think it will be a different game,” says Gaves. “We’re talking about a full health science and clinical development safety suite. There will be options around which applications to use.” On the EDC front, she acknowledges that an early version of the company’s solution may have been a bit too dependent on the Acrobat PDF interface from Adobe . But subsequent updates have freshened the product, adding a more traditional web-only browser interface. Oracle’s EDC software continues to be seamlessly integrated with a full-fledged clinical data management system (CDMS) in ways that other EDC solutions are not. Big pharma understands the ongoing relevance of a full-featured CDMS, Gaves says. New Unit Without tipping her hand, Gaves says there are discussions at Oracle which will convince the industry that the company is serious about offering modern, up-to-date eclinical tools. “There are things that are going on here. They’re interesting,” she says. Last June, she alerted us, Oracle created a dedicated business unit for the life sciences, something that the Redwood Shores, California company doesn’t do casually. (Here’s a release on the topic.) The new group will have additional resources and a bit of independence from the usual corporate encumbrances. (Other business units at Oracle are devoted to financial services, retail stores and insurance.) Business unit status raises the stakes. Within Oracle, there’s an expectation that the unit will be first in its industry niche. (Any such assertion about its dominance of eclinical or even EDC would be vigorously contested by Oracle’s competitors.) Says Gaves: “With that attention comes opportunity and risk and expectation. We’ve seen a lot of momentum in terms of strategic deals. It’s an extremely busy road map.” Gaves reports to Nick Giannasi, who is leading the product strategy of the business unit and a veteran of the health care division of take-no-prisoners GE . Although not typical in the eclinical space at the moment, the ability to address health care and industry-sponsored pharmaceutical research in the same product suite could be an advantage for Oracle in an era in which some customers want more all-encompassing solutions that touch both worlds. The company’s core strength in databases and their accessories remains razor-sharp. Analytics Push An example. Oracle had a clinical data repository that limped along for a while, not so much on its merits but because of perceptions that no one in any industry really ever gets much done with a data warehouse. But then a few life science customers started using Oracle’s product, and it worked. “Some customers use it to automate clinical study reports. It’s starting to take off. There are five customers up on it now and lots of interest,” Gaves reports. She offered a hint about another initiative for 2009: business intelligence. “That is the next product we’re working on,” Gaves says. Oracle did buy Hyperion and Siebel during its acquisition spree but has also put its own business intelligence mojo into the new product’s functionality. Gaves is not arrogant. “We did lose market share,” she says. But she believes the work Oracle was doing on its pharmaceutical-industry product suite leaves it well-positioned for the next few years. Says Gaves: “There are some positive things coming out of the investments we made in that time. We’re here, we’re curious.”
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分享 Oracle Buys Phase
slimdell 2015-4-6 18:02
http://www.clinpage.com/article/oracle_buys_phase/C22 Oracle Buys Phase APRIL 26, 2010 Comments Tell a Friend Print OmniComm , a provider of electronic data capture (EDC), announced quarterly financial results. Without releasing specific revenue or profit numbers, the company said new contract awards were up 162 percent. Graham Nicholls will join Almac as director of biostatistics. After a career at GSK and Parexel, he’ll be working in the firm’s clinical technology division. “Graham brings considerable experience in adaptive trial designs, covariate adaptive (dynamic) randomization techniques, and other complex trial designs,” the release states. Bio-Optronics has updated its clinical trial management system (CTMS). The new version was refined for contract research organizations and site management organizations “to facilitate patient recruitment, study execution, regulatory compliance, financial management and communication across clinical research entities,” the release states. U.S. politicians are wading into a scientific debate over Avandia, GSK's diabetes blockbuster. Washington is trying to nudge regulators to halt a post-marketing study. One issue is the informed consent paperwork in the project. If the study is halted, it could affect whether the diabetes blockbuster remains on the market. The Wall Street Journal broke the story and unearthed this letter from the FDA to a top farm-state lawmaker. Charles River will make a major purchase in China, buying WuXi AppTec for $1.6 billion. WuXi has approximately 4,000 employees and specializes in central lab and manufacturing services. In the deal of the decade, Oracle bought Phase Forward for $685 million. The transaction is presumably under antitrust review. The purchase instantly raises Oracle’s life science profile in three key areas—electronic data capture, drug safety and randomization—after years of also-ran status. Phase Forward didn't invent EDC, but the firm did figure out how to deliver an uproven technology to a skeptical market. Phase Forward proved that EDC could be both a) profitable and b) heavily customized to the exacting specifications of big pharma. Phase Forward was able to sign large, prominent customers like GSK and Lilly to long-term contracts that gave the firm an aura of invincibility. The purchase is a tacit acknowledgment that Oracle’s own EDC product, developed with and for Pfizer, had never attracted any other admirers, even though the software was often given away. Oracle is not replying to media requests for interviews; Phase Forward canceled its usual quarterly call with Wall Street analysts. The deal is a win for Phase Forward investors, but there may be cultural issues in integrating the two firms that Oracle has not previously encountered. This January, 2009 ClinPage story is a rare case of Oracle articulating its strategy; in that story, a life sciences executive vowed that her newly reorganized business unit would grab the top position in the eclinical industry. Have a news release? Send it to us.
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分享 Oracle and Phase Forward
slimdell 2015-4-6 17:56
http://www.appliedclinicaltrialsonline.com/oracle-and-phase-forward Oracle and Phase Forward Apr 28, 2010 By Lisa Henderson Applied Clinical Trials With the announced intention to acquire Phase Forward and finalize the transaction in mid-2010, Oracle has made what one industry expert called “an interesting and daring move.” And another called it the deal of the decade . Most in the IT and financial press are “bullish” on the announcement. Most also outline Oracle’s strategy since 2005 to grow its vertical markets through acquisition, and its Health Sciences unit is no exception. Perennial acquisition began with Siebel’s Customer Relationship Management (CRM) in 2005, which sowed the seeds for an application that crossed many of Oracle’s vertical markets, and made inroads to Siebel’s existing customer base. Somewhere in there, the Siebel CTMS product along with its RDC product went into the Oracle applications mix for Life Sciences. In June 2008, Oracle created the Health Sciences business unit. The next acquisition for Oracle was the Relsys drug safety and risk management application in March 2009. Phase Forward, founded in 1997 by Paul Bleicher, MD, and while starting off with a strong EDC product for clinical trials, is no stranger to purchasing technologies. Its acquisition list includes: 2005, Lincoln Technologies, safety. October 2007, Green Mountain Logic, Phase I trials software. September 2008, Clarix Web-integrated IRT. 2009, Waban Software, automation and compliance of clinical data analysis and reporting. July 2009, Maaguzi, ePRO and late phase. August 2009, Covance’s IVR/IWR services business. Other services that comprise an end-to-end eClinical suite, besides the previously mentioned, are: CDMS, data repository, thesaurus management, FDA submissions management, and CRO management. Oracle had six of the 11; Phase Forward, 11 of 11. So there will be overlap of applications. Reports say that Oracle gains access to over 300 established Phase Forward customers. For now, there is nothing to do but wait, and speculate. Business Models Jim DeSanti, CEO of PharmaVigilant, an eClinical software provider in Westborough, Mass., said of the companies’ disparate business models: “Oracle has no ASP arm, only IT. And Phase Forward has a hybrid technology and ASP model, which was growing more on the services side the past two years. So much so that people considered it in competition with CROs.” DeSanti said that merging these two different business models would not be easy. “Clients make decisions based on certain criteria. Oracle is traditionally IT and Phase Forward, clinical.” DeSanti said the goal of IT is how to best integrate its system with the various other systems it has. The goal of clinical? To find the best tools possible to get the drug through the trial. “For them, it’s all about drug development. There are two different agendas,” he noted. In addition to that mix, throw in the overall conservativeness of the pharmaceutical industry, one that is risk averse. DeSanti remarked that the next 12 to 24 months will be an interesting one for this merger. Pricing “It'll be interesting to see how pricing goes with Oracle. I think this merger makes a lot of sense for them from a business perspective, and really puts the squeeze on smaller players migrating away from Oracle due to cost,” said Timothy Pratt, PhD, MBA, principal, Crucial Clinical and business Consultants and Editorial Advisory Board member to Applied Clinical Trials. While Pratt echoes what others have said about Oracle prior to this announcement—that Oracle is too big and too expensive for viability among the smaller to mid-size pharm or biotech—Ruchi Mallya, Analyst, Pharmaceutical Technology, Ovum told Applied Clinical Trials that she believes that this merger gives small biotech access to Oracle, not further exclusion. “Oracle would like to provide more access to their solutions. By purchasing Phase Forward and its SasS model, it offers small biotech the opportunity to have that Oracle brand. They are moving toward everyone, not just pharma.” In this article , Mallya noted that the first thing Oracle would need to address is ambiguity among clients, as well as the industry at large consisting of potential clients currently evaluating their eClinical solutions. “There is overlap of products, and so they have to clarify if they will switch over to one product, sustain both, or offer a hybrid.” While Oracle did offer letters to customers on this Web site , this blog offers advice for current customers. It also mentioned that Oracle traditionally raises its maintenance pricing by 22%. Drug Safety As mentioned, one area of overlap is drug safety. Not only did Oracle purchase a well-known provider of data safety and risk management in the form of Relsys last year, it is acquiring Phase Forward’s Empirica suite of safety solutions from clinical trials signal detection, to pharmacovigilance (originating from the Lincoln Technologies acquisition) to adverse event reporting. Sentrx, a Little Falls, NJ-based company that provides pharmacovigilance services for all aspects of drug development, in areas comprising technology, quality, medical affairs, and regulatory, also as a Business Partner, supports the safety systems provided by Oracle and Phase Forward. Sentrx CEO Chuck Saldarini told Applied Clinical Trials that he is bullish on the announcement. “We think it sends a major signal on the importance of safety,” said Saldarini. “Oracle is basically saying that safety is critical.” Saldarini outlined the current momentum within health care, specifically EMRs, the move toward a PC in every examination room to now tablet-based technologies, and how it will change the way that safety information is collected, reported, aggregated, and used within the postmarket domains, as well as how it crosses over into the clinical domain. “It’s all exciting for us,” said Saldarini. “We get access to Oracle’s expertise. And we get to track with our customers on the overall Oracle roadmap.” Medidata Then there were two--Oracle and Medidata. There are more than two, there are a host of other eClinical players who are viable and have long histories, and satisfied customers in the industry. However, the top three for some time have been Phase Forward, Medidata, and Oracle. According to Mallya, Medidata is in a unique position to differentiate itself even more from the pack. “They can say, ‘We’re an eClinical provider and we’re not a big giant.’” Medidata has its own unique history and was founded in 1999. It completed its IPO in June 2009, and currently maintains a customer base of 173. Revenues generated from customers in Europe and Asia comprise approximately one-third of its total revenues.
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分享 三个流行MySQL分支
Lisrelchen 2014-8-4 21:52
导读:尽管MySQL是最受欢迎的程序之一,但是许多开发人员认为有必要将其拆分成其他项目,并且每个分支项目都有自己的专长。该需求以及Oracle对核心产品增长缓慢的担忧,导致出现了许多开发人员感兴趣的子项目和分支。本文将讨论受人们关注的三个流行MySQL分支:Drizzle、MariaDB和Percona Server(包括XtraDB引擎)。文中简要介绍每个分支出现的原因及其目标,以及是否可在您自己的生产环境中使用它们。 文章内容如下: 简介 MySQL是历史上最受欢迎的免费开源程序之一。它是成千上万个网站的数据库骨干,并且可以将它(和Linux)作为过去10年里Internet呈指数级增长的一个有力证明。 那么,如果MySQL真的这么重要,为什么还会出现越来越多的核心MySQ产品的高端衍生产品?这是因为MySQL是免费的开源应用程序,所以开发人员总是可以获得其代码,并按照自己的想法修改代码,然后再自行分发代码。在很长的一段时间里,在开发人员自己的生产环境中,没有任何值得信任的MySQL分支。但是,这种情况很快就发生了改变。有几个分支引起了许多人的关注。 为什么要进行分支? 为什么需要对MySQL进行分支?这是一个非常合理的问题。成千上万的网站依赖于MySQL,并且对许多人来说,它似乎是一个很好的解决方案。但是,通常就是这样,适合许多人并不一定适合所有人。这促使一些开发人员想要根据自己的需要开发出更好的解决方案。还有什么能比将良好的解决方案转换为完美的解决方案更好的呢?。 下面我们将介绍这些分支寻求改变的更多细节。一些分支认为MySQL变得太臃肿了,提供了许多用户永远不会感兴趣的功能,牺牲了性能的简单性。如果人们对更精简的MySQL 4特别满意,那么为什么还要在MySQL 5中添加额外的复杂性呢?对于此分支来说,更好的MySQL分支应该更简单、更快捷,因此提供的功能也较少,但这样会使这些功能极其迅速地发挥作用,并且牢记目标受众,在本例中,目标受众是高可用性网站。 对于其他分支来说,MySQL并没有提供足够多的新功能,或者是添加新功能的速度太慢了。他们可能认为MySQL没有跟上高可用性网站的目标市场的发展形势,这些网站运行于具有大量内存的多核处理器之上。正如熟悉MySQL的人所知道的那样,MySQL提供了两种存储引擎:MyISAM和InnoDB。这一分支认为这两种存储引擎都没有提供他们所需的内容,因此他们创建了一种非常适合其目标的新存储引擎。 此外,一些分支的最高目标是成为MySQL的替代产品,在这些产品中,您可以轻松地访问它们的分支,无需更改任何代码。该分支使用与MySQL相同的代码和界面,因此使过渡变得非常容易。但是,另一个分支声称它与MySQL不兼容,需要更改代码。每个分支的成熟度各不相同,一些分支声称已经准备就绪可以投入生产,而另外一些则声称目前自己还远达不到这一最高目标。 最后,关于MySQL在Oracle下将如何发展仍不太确定。Oracle收购了Sun,也收购了MySQL,现在Oracle控制MySQL产品本身,并领导开发社区开发新的成品。由于Oracle已经有了一个商业数据库,因此人们担心他们可能没有足够的资源来使MySQL保持其领先地位。因此,许多分支也是这些潜在担心所产生的结果,他们担心MySQL作为领先的免费开源数据库提供的功能可能太少、发布周期太慢并且支持费用更昂贵。 XtraDB XtraDB是一款独立的产品,但它仍被认为是MySQL的一个分支。XtraDB实际上是基于MySQL的数据库的一个存储引擎。XtraDB被认为是已成为MySQL一部分的标准MyISAM和InnoDB的一个额外存储引擎。MySQL 4和5使用默认的MyISAM存储引擎安装每个表。InnoDB也是一个相对较新的存储引擎选择,在建立数据库时,数据库管理员和开发人员可以基于每个表选择存储引擎类型。两个存储引擎的主要区别是:MyISAM没有提供事务支持,而InnoDB提供了事务支持。其他差别是许多细微的性能差别,与MyISAM相比,InnoDB提供了许多细微的性能改进,并且在处理潜在的数据丢失时提供了更高的可靠性和安全性。似乎InnoDB是用于未来改进的更适合的存储引擎,因此从版本5.5开始,MySQL已将默认存储引擎从MyISAM更改为InnoDB。 基于这些优势,InnoDB存储引擎本身拆分出了一个分支,一个名为XtraDB的更新的存储引擎。这个存储引擎有多新呢?它3年前由Percona首次发布,因此它相对较新。它是专门针对在现代服务器上运行的现代高可用性网站设计的。它被设计为在具有十几个或更多核心和大内存(32GB及更多)的服务器上运行。任何公司都可以从服务器管理公司购买这些类型的服务器,因此应将数据库设计为能够充分利用这些服务器。 XtraDB分支有另一个目标,即成为InnoDB存储引擎的简单替代,这样用户就可以轻松地切换其存储引擎,无需更改任何现有的应用程序代码。XtraDB必须能够向后兼容InnoDB,以提供它们想要添加的所有新功能和改进。它们实现了此目标。 XtraDB的速度有多快?我找到的一个性能测试表明:与内置的MySQL 5.1 InnoDB 引擎相比,它每分钟可处理2.7倍的事务。(请参见参考资料)。速度显然是一个不可以忽略的因素,在考虑替代产品时更是如此。 Percona 与内置的MySQL存储引擎相比,XtraDB提供了一些极大的改进,但它不是一款独立产品,也无法轻松放入现有MySQL安装。因此,如果您想使用这款新引擎,则必须使用提供它的产品。 Percona Server就是这样一款产品,由领先的MySQL咨询公司Percona发布。Percona Server是一款独立的数据库产品,为用户提供了换出其MySQL安装并换入Percona Server产品的能力。通过这样做,就可以利用XtraDB存储引擎。Percona Server声称可以完全与MySQL兼容,因此从理论上讲,您无需更改软件中的任何代码。这确实是一个很大的优势,适合在您寻找快速性能改进时控制质量。因此,采用Percona Server的一个很好的理由是,利用XtraDB引擎来尽可能地减少代码更改。 此外,他们是XtraDB存储引擎的原作者。Percona将此代码用作开源代码,因此您可以在其他产品中找到它,但引擎的最初创建者与编写此产品的是同一个人,所以您可以随心所欲地使用此信息。 下面是Percona Server的声明,该声明来自它们自己的网站: 可扩展性:处理更多事务;在强大的服务器上进行扩展 性能:使用了XtraDB的Percona Server速度非常快 可靠性:避免损坏,提供崩溃安全(crash-safe)复制 管理:在线备份,在线表格导入/导出 诊断:高级分析和检测 灵活性:可变的页面大小,改进的缓冲池管理 Percona团队的最终声明是“Percona Server是由Oracle发布的最接近官方MySQL Enterprise发行版的版本”,因此与其他更改了大量基本核心MySQL代码的分支有所区别。Percona Server的一个缺点是他们自己管理代码,不接受外部开发人员的贡献,以这种方式确保他们对产品中所包含功能的控制。 MariaDB 另一款提供了XtraDB存储引擎的产品是MariaDB产品。它与Percona产品非常类似,但是提供了更多底层代码更改,试图提供比标准MySQL更多的性能改进。MariaDB直接利用来自Percona的XtraDB引擎,由于它们使用的是完全相同的引擎,因此每次使用存储引擎时没有显著的差别。 此外,MariaDB提供了MySQL提供的标准存储引擎,即MyISAM和InnoDB。因此,实际上,可以将它视为MySQL的扩展集,它不仅提供MySQL提供的所有功能,还提供其他功能。MariaDB还声称自己是MySQL的替代,因此从MySQL切换到MariaDB时,无需更改任何基本代码即可安装它。 最后可能也是最重要的一点是,MariaDB的主要创建者是Monty Widenius,也是MySQL的初始创建者。Monty成立了一家名为Monty Program的公司来管理MariaDB的开发,这家公司雇佣开发人员来编写和改进MariaDB产品。这既是一件好事,也是一件坏事:有利的一面在于他们是Maria功能和bug修复的佼佼者,但公司不是以赢利为目的,而是由产品驱动的,这可能会带来问题,因为没有赢利的公司不一定能长久维持下去。 Drizzle 本文介绍的最后一款产品是Drizzle。与之前介绍的两款产品不同,Drizzle与MySQL有很大差别,甚至声称它们不是MySQL的替代产品。他们期望对MySQL进行一些重大更改,想要提供一种出色的解决方案来解决高可用性问题,即使这意味着要更改我们已经习惯了的MySQL的各个方面。 在公司的FAQ页面,阅读其中提供的问题时就会发现,Drizzle进一步地强调了其基本目标。他们不满意MySQL 4.1版本之后对MySQL代码进行的一些更改,声称许多开发人员不想花费额外的钱。他们承认其产品与SQL关系数据库甚至是不兼容的。这确实与MySQL有很大的不同。 与习惯的MySQL有如此大的变化,我们为什么还要考虑这款产品呢?准确地讲,原因与上面的是相同的,Drizzle是MySQL引擎的一次重大修改,它清除了一些表现不佳和不必要的功能,将很多代码重写,对它们进行了优化,甚至将所用语言从C换成了C++,以获得所需的代码。此外,Drizzle并没有就此结束修改,该产品在设计时就考虑到了其目标市场,即具有大量内容的多核服务器、运行Linux的64位机器、云计算中使用的服务器、托管网站的服务器和每分钟接收数以万计点击率的服务器。这是一个相当具体的市场。它太具体了吗?请记住这些类型的公司目前在其数据库方面投入的资金,如果他们可以安装Drizzle而不是MySQL,那么他们的服务器成本将削减一半,可以节省很多钱! 那么,是不是所有人都应该使用Drizzle呢?等等,正如Drizzle反复指出的那样,它与MySQL不兼容。因此,如果您现在使用的是MySQL平台,那么需要重写大量代码,才能使Drizzle在您的环境中正常工作。 尽管需要额外的工作才能让它运行,但它并不像Percona或MariaDB那样快速且易于使用。我之所以介绍Drizzle,是因为尽管目前它可能不是您的选择,但几年之后,它很可能会成为一些人的选择。因为本文的目标是提高您对未来使用的工具的认识,所以这是向您介绍此产品的好机会。许多领先的DB专家相信Drizzle将成为未来5年内高可用性数据库安装的选择。 Drizzle是完全开源的产品,公开接受开发人员的贡献。它不像MariaDB那样有支持其开发的公司,也不像Percona那样有大量外部开发人员为其提供贡献。Drizzle有很好的成长空间并会提供一些新功能,但可能需要重写大部分MySQL代码。 对比图 下面是本文中介绍的三款MySQL分支产品的概述。 结束语 本文介绍了MySQL产品的三个新分支,旨在解决它们使用MySQL时遇到的一些问题。这三个分支都是免费的开源产品。在使用时,您需要根据MySQL已提供的功能来权衡它们的优缺点。我相信,对于阅读本文的大多数人来说,MySQL将仍然是满足数据库需求的首选。我很怀疑阅读本文的大多数读者都是每小时拥有1,000,000点击率的网站的所有者。我想再次强调的是,MySQL仍然是一款非常出色的产品,是一个非常适合大多数使用情况的数据库。 但是,对于那些认为自己的网站需要比目前MySQL所能提供的更高的可用性、可扩展性和性能的人来说,这3款产品中的任意一款产品都可能为您提供所需的解决方案。更进一步地说,如果您认为您的网站将成为能获得很多利润的网站,那么可以考虑使用三款产品中的一款产品,在问题出现之前解决它们。 最后,出现这些MySQL分支的根本原因是:一些创作者想更改MySQL的一些基本功能,因为他们无法等到MySQL自己完成这些工作。此外,Oracle的现状威胁到了MySQL的未来,并且许多开发人员(包括MySQL的原始开发人员)都担心该产品的未来,他们还担心Oracle是否会投入精力保持该产品的领先数据库的地位。这些担忧在我看来都是合理的,因此在我们迈向未来时要牢记这些产品。 作者简介: Michael Abernethy在Michael Abernethy的12年技术生涯中,他与各种不同的技术和客户打交道。他现在专注于构建更好和更为复杂的Web应用程序、测试运行这些应用程序所在的浏览器的限制,同时也在尝试解决如何让Web应用程序更容易创建和维护。他空闲时,会陪伴他的孩子们。 转自 http://www.csdn.net/article/2011-12-29/309890
个人分类: SQL|47 次阅读|0 个评论
分享 R连接oracle
洋葱小仙 2012-7-25 14:23
1. oracle客户端配置完毕。 2. 在控制面板—管理工具—数据源(ODBC) 系统DSN添加:下a c可任意取名。 a. Data source name-为stats(oracle对象之一) b. TNS Service name-为识别oracle字符串名 c. User id-用户名 3. Test connnection Service name - 默认刚才设置b User name - 默认刚才设置c Password - 库名的密码 (可以每一个库都设置一个) 4. 打开R软件 输入 conn -odbcConnect("fclub",uid="**",pwd="**") a-sqlQuery( conn ,'select * from fc_region where region_type=1') 5. 在connect情况下,无法再次connect其他对象,需要关闭当前连接 odbcClose( conn )
个人分类: R|7 次阅读|0 个评论
分享 ELLISON TO GRADS: DIPLOMAS ARE FOR LOSERS Oracle CEO Urges Students to Drop out
mingyu86 2012-6-12 18:40
NEW HAVEN, CONN. (SatireWire.com) — In one of the more controversial commencement addresses in memory, Oracle CEO and college dropout Larry Ellison told Yale's Class of 2000 they were "losers" whose hard-won diplomas would never propel them into the ranks of the super rich. The evangelical Ellison, noting that college dropouts Bill Gates, Paul Allen, and Michael Dell were, like himself, on Forbes' recent top 10 list of billionaires, urged freshmen and sophomores at the ceremony to "drop out and start up," and added that the undereducated Yale security guards who ushered him off stage probably had a better shot at uber-wealth than graduating seniors. What follows is a transcript of the speech delivered by Ellison at the Yale University last month: "Graduates of Yale University, I apologize if you have endured this type of prologue before, but I want you to do something for me. Please, take a good look around you. Look at the classmate on your left. Look at the classmate on your right. Now, consider this: five years from now, 10 years from now, even 30 years from now, odds are the person on your left is going to be a loser. The person on your right, meanwhile, will also be a loser. And you, in the middle? What can you expect? Loser. Loser hood. Loser Cum Laude. "In fact, as I look out before me today, I don't see a thousand hopes for a bright tomorrow. I don't see a thousand future leaders in a thousand industries. I see a thousand losers. "You're upset. That's understandable. After all, how can I, Lawrence 'Larry' Ellison, college dropout, have the audacity to spout such heresy to the graduating class of one of the nation's most prestigious institutions? I'll tell you why. Because I, Lawrence "Larry" Ellison, second richest man on the planet, am a college dropout, and you are not. "Because Bill Gates, richest man on the planet -- for now, anyway -- is a college dropout, and you are not. "Because Paul Allen, the third richest man on the planet, dropped out of college, and you did not. "And for good measure, because Michael Dell, No. 9 on the list and moving up fast, is a college dropout, and you, yet again, are not. "Hmm... you're very upset. That's understandable. So let me stroke your egos for a moment by pointing out, quite sincerely, that your diplomas were not attained in vain. Most of you, I imagine, have spent four to five years here, and in many ways what you've learned and endured will serve you well in the years ahead. You've established good work habits. You've established a network of people that will help you down the road. And you've established what will be lifelong relationships with the word 'therapy.' All that of is good. For in truth, you will need that network. You will need those strong work habits. You will need that therapy. "You will need them because you didn't drop out, and so you will never be among the richest people in the world. Oh sure, you may, perhaps, work your way up to No. 10 or No. 11, like Steve Ballmer. But then, I don't have to tell you who he really works for, do I? And for the record, he dropped out of grad school. Bit of a late bloomer. "Finally, I realize that many of you, and hopefully by now most of you, are wondering, 'Is there anything I can do? Is there any hope for me at all?' Actually, no. It's too late. You've absorbed too much, think you know too much. You're not 19 anymore. You have a built-in cap, and I'm not referring to the mortar boards on your heads. "Hmm... you're really very upset. That's understandable. So perhaps this would be a good time to bring up the silver lining. Not for you, Class of '00. You are a write-off, so I'll let you slink off to your pathetic $200,000-a-year jobs, where your checks will be signed by former classmates who dropped out two years ago. "Instead, I want to give hope to any underclassmen here today. I say to you, and I can't stress this enough: leave. Pack your things and your ideas and don't come back. Drop out. Start up. "For I can tell you that a cap and gown will keep you down just as suredly as these security guards dragging me off this stage are keeping me dow..."
10 次阅读|0 个评论

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