- IaaS指提供系统(可以自己选)或者储存空间之类的硬件,软件要自己手动装。PaaS提供语言环境和框架(可以自己选)。SaaS只能使用开发好的软件(卖软件本身,如税务会计、表格文字处理)。BaaS一般类似于非关系数据库,但各家不通用
- 云服务的特点:零前期成本 & 按需付费 & 弹性(类似于租,可随时多加、退掉;但没有残值)、高可用(放在机房中,不同AZ间水电隔离)
- https://education.github.com/pack GitHub学生包,需用教育邮箱验证。各种福利,可从DigitalOcean上手
- https://github.com/ripienaar/free-for-dev 本文尽量不与此项目重复
- https://free.zhelper.net/
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官網下載 | |
https://devcenter.heroku.com/articles/heroku-cli | |
安裝heroku-windows-amd64.exe | |
安裝完Heroku 會安裝Git | |
預設資料夾是 | |
C:\Program Files\Heroku | |
C:\Program Files\Git |
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/*------------------------------------------ | |
Responsive Grid Media Queries - 1280, 1024, 768, 480 | |
1280-1024 - desktop (default grid) | |
1024-768 - tablet landscape | |
768-480 - tablet | |
480-less - phone landscape & smaller | |
--------------------------------------------*/ | |
@media all and (min-width: 1024px) and (max-width: 1280px) { } | |
@media all and (min-width: 768px) and (max-width: 1024px) { } |
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var arr = JSON.parse('@Html.Raw(Json.Encode(@Model.DuplicateIds))') |
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COLUMN TABLE_NAME FORMAT A32 | |
COLUMN OBJECT_NAME FORMAT A32 | |
COLUMN OWNER FORMAT A10 | |
SELECT | |
owner, table_name, TRUNC(sum(bytes)/1024/1024) Meg | |
FROM | |
(SELECT segment_name table_name, owner, bytes | |
FROM dba_segments | |
WHERE segment_type = 'TABLE' |