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创建增量同步Oracle物化视图问题 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...物化视图创建规范。
有一篇文档可以参考一下：http://www.skill-guru.com/blog/2010/01/03/understanding-materialized-view-in-oracle/这个文档有助于你理解Oracle的物化视图。
Oracle 增量同步 物化视图
Can I have multiple primary keys in a single table?
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Both Primary Key & Alternate keys can be Compound keys
Sources:
https://en.wikipedia.org/wiki/Superkey
https://en.wikipedia.org/wiki/Candidate_key
https://en.wikipedia.org/wiki/Primary_key
https://en.wikipedia.org/wiki/Compound_key
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Why are two different concepts both called “heap”?
...inding available memory allocation. The following is excerpted from http://www.cprogramming.com/tutorial/virtual_memory_and_heaps.html.
When new is invoked, it starts looking for a free memory block that fits the size for your request. Supposing that such a block of memory is found, it is marked...
“Single-page” JS websites and SEO
...est can come from your CDN (using require.js to manage dependencies -- see https://stackoverflow.com/a/13813102/1595913).
(test the link's validity by converting the link to your url scheme and testing against existence of content by querying a static or a dynamic source. if it's not valid send a 40...
Android List Preferences: have summary as selected value?
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I also wanted to achieve something similar, but the problem with https://stackoverflow.com/a/8155029/592025 is that, it shows the value for my preference (like 1, 2 3 etc). I want to show the entry (human readable string) corresponding to the selected value.
So I changed it this way and w...
What happens to a declared, uninitialized variable in C? Does it have a value?
... why is it this way? A different SO answer deals with that question, see: https://stackoverflow.com/a/2091505/140740
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Xcode 6 Storyboard the wrong size?
...your views and cover all iPhone portrait orientations.
Apple's docs here: https://developer.apple.com/library/ios/recipes/xcode_help-IB_adaptive_sizes/chapters/SelectingASizeClass.html or search on "Selecting a Size Class in Interface Builder"
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How can I get useful error messages in PHP?
...use 1 program to do everything.)
Cartman's link is also very good: http://www.ibm.com/developerworks/library/os-debug/
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社会化海量数据采集爬虫框架搭建 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...网络请求
GetMethod method = new GetMethod("http://www.baidu.com" );
int statusCode = httpClient.executeMethod(method);
if (statusCode == HttpStatus. SC_OK) {
content = method.getResponseBodyAsString();
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SyntaxError: Use of const in strict mode
...ble NodeJS version
sudo n stable
Update nodejs instructions taken from, https://stackoverflow.com/a/19584407/698072
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