日志
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广域网介绍
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bs15000 2011-3-2 15:40
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一、广域网术语 1、CPE (Customer Premises Equipment,客户前端设备):物理位置在用户接入端的设备,包括属于用户的设备和服务提供商租用给用户端的设备。例如ADSL Modem、机顶盒等。 2、DEMARCATION (分界):在CPE末端,开始提供服务的本地环路部分,是广域网和局域网的分界线 3、LOCAL-LOOP (本地环路):从分界到 ...
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个人分类: 技术|678 次阅读|0 个评论
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11.2 db compression vs. 10g r2, version 10.2.0.4(转)
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bs15000 2011-1-26 11:30
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You Asked Dear Tom Is 11.2.0.2 compression better than 10.2.0.4 ? if so how ? Thanks C and we said...In Oracle 9iR2 and later, with enterprise edition, you have what is known as 'basic compression' as a feature in the database. Basic compression works at the block level, removing redundan ...
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个人分类: 技术|1031 次阅读|1 个评论