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What's the difference between a catalog and a schema in a relational database?
... teams. One writes software to manage the warehouses while the other team builds software to manage sales and marketing. Each dev team has their own database, blissfully unaware of the other’s.
But the IT operations team took a decision to run both databases on a single computer box (Linux, Mac,...
What is the usefulness of PUT and DELETE HTTP request methods?
...entation in the PUT body for the webserver to apply then.
So, if you are building some sort of client for a REST API, you will likely make it send PUT and DELETE requests. This could be a client built inside a browser, e.g. sending requests via JavaScript or it could be some tool running on a serve...
一文了解大数据领域创业的机会与方向 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...也是一个方向。新一代的大数据处理工具应该是有着漂亮UI，功能按键和数据可视化等模块的完整产品，而不是一堆代码。
再说2C方向。
大数据一个很大的作用就是为决策做依据，以前做决定是“拍脑袋”决定，现在，做决定...
What is the difference between the states selected, checked and activated in Android?
...
The difference between Checked and Activated is actually quite interesting. Even the Google documentation is apologetic (emphasis below added):
... For example, in a list view with single or multiple selection
enabled, the views in the current selection set are activated. (Um...
Set Locale programmatically
My app supports 3 (soon 4) languages. Since several locales are quite similar I'd like to give the user the option to change locale in my application, for instance an Italian person might prefer Spanish over English.
...
How to use WeakReference in Java and Android development?
...id isn't any different than using one in plain old Java. Here is a great guide which gives a detailed explanation: Understanding Weak References.
You should think about using one whenever you need a reference to an object, but you don't want that reference to protect the object from the garbage co...
Could someone explain the pros of deleting (or keeping) unused code?
... have
worked hard on are understandable. But part of being professional
requires that those thoughts have to be put to one side for the better
good. Time stands for no-one and there is no place for preserving historical code in a working codebase.
...
Should I avoid the use of set(Preferred|Maximum|Minimum)Size methods in Java Swing?
...ods are used for giving size hints: http://docs.oracle.com/javase/tutorial/uiswing/layout/using.html#sizealignment.
They may also be overridden (which is the best practice for Swing) when extending a Swing component (rather than calling the method on the custom component instance)
Most importantly...
Understanding the Event Loop
...based on code instead of a description of code, which leaves a lot of ambiguity.
– Peter Lyons
Apr 6 '15 at 21:14
yout...
What does 'COLLATE SQL_Latin1_General_CP1_CI_AS' do?
...precated, and are mainly for pre-SQL Server 2000 compatibility. Although, quite unfortunately SQL_Latin1_General_CP1_CI_AS is very common due to it being the default when installing on an OS using US English as its language. These collations should be avoided if at all possible.
Windows collations ...