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    2007/10/5

    评：十大已亡或正在灭亡的电脑技术

    先看看那些正在退休的技术：

    1.Cobol：

    Y2k（千年虫）好像给了Cobol一次新机遇，然而仅仅六个月到一年的时间，这门衰退的语言便再无救世主，与此同时，也极少有学校再开这门课。

    2.Nonrelational DBMS：

    20世纪80年代，主要有两大数据库管理系统方式：一是多级递阶系统（hierarchical systems）如IBM的IMS，另一种就是network DBMS，像当初的OracleDBMS。然而今天二者都已被关系型数据库管理系统所取代，像DB2, Oracle and Microsoft SQL Server。

    3.Non-IP networks：

    TCP/IP已经基本统治了网络世界，由此同时，人们对IBM SNA (Systems Network Architecture)的需求也越来越少。尽管现在仍有许多银行、保险公司在SNA网络方面投资，然而在整个网络投资方面的比例已经很小很小。

    4.cc:Mail：

    这一基于LAN存储转发的e-mail系统始于80年代初，曾达到两千万的使用人数。然而当更复杂的邮件系统如Lotus Notes 和Microsoft Exchange出现的时候，它便迅速末落了。

    5.ColdFusion：

    曾经流行的网页设计语言，由Allaire公司在上世纪90年代中期推出。曾经关于ColdFusion是否灭亡的争论也已平息，因为现在已经是.Net，Java，Ruby on Rails，Python，PHP的天下。

    6.C语言：

    随着Web时代的来临，C 语言跟这个时代越来越没关系。“C++和C#仍然矫健着，但如果你想找一个纯C语言的程序员，要么他失业，要么他正在学习一门新语言。”

    7.PowerBuilder：

    美国Powersoft公司于90年代初推出的基于客户/服务器体系结构的面向对象的数据库开发工具，后被Sybase收购，还记得它当初有多热吗？ 被视为Oracle的竞争对手。然而现在PowerBuilder程序员处于需求的最底层。不过预计今年推出的PowerBuilder 11已经可以生成.NET代码。

    8.Certified NetWare Engineers：

    90年代成为一位Certified NetWare Engineer是很时髦的事，一度让Novell在PC服务业占据90%的市场份额。然而两年的时间人们便转向了NT。“就像一夜之间发生的一样。”

    9.PC network administrators：

    越来越多的人转到Windows servers，network administrators(网络管理员)的需求越来越少。

    10.OS/2：

    最初由微软和IBM联合在1987年隆重推出，然而不久合作破裂，IBM在经过一段时间为OS/2的消亡辟谣之后，还是在2005年终止了销售。现在OS/2还是有一个专门的社区，这款开放的操作系统仍被一家叫Serenity Systems International 的公司以eComStation的名字销售。

     

    电脑技术突飞猛进，10数年间已经是更新换代，旧有的技术和产品满足不了新的需求，自然也就被淘汰了。花落花开，看回当年大红大紫的产品与技术，当时有谁会想到了它们的没落呢？如今我们发烧的谈着搜索，聊着在线社区网站的火热，网络游戏的白热化，10年后又会是什么光景呢？

    所以，时空变幻，我未习惯。

    17:06:52 | 写入日志 | 心宇宙

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