React.js and Spring Data REST - Basic Features

Spring Data REST provides backend functionality
React has sophisticated features to build an easy-to-grok UI.

• Spring Data REST provides a fast way to build hypermedia-powered repositories.
• React is Facebook’s solution to efficient, fast, and easy-to-use views in the land of JavaScript.

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Java Concurrency

1. Java Concurrency from docs.oracle.com
Computer users take it for granted that their systems can do more than one thing at a time. They assume that they can continue to work in a word processor, while other applications download files, manage the print queue, and stream audio. Even a single application is often expected to do more than one thing at a time. For example, that streaming audio application must simultaneously read the digital audio off the network, decompress it, manage playback, and update its display. Even the word processor should always be ready to respond to keyboard and mouse events, no matter how busy it is reformatting text or updating the display. Software that can do such things is known as concurrent software.
The Java platform is designed from the ground up to support concurrent programming, with basic concurrency support in the Java programming language and the Java class libraries. Since version 5.0, the Java platform has also included high-level concurrency APIs. This lesson introduces the platform's basic concurrency support and summarizes some of the high-level APIs in the java.util.concurrent packages.

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Database normalization Introduction

Definition from wikipedia

Database normalization is the process of restructuring a relational database in accordance with a series of so-called normal forms in order to reduce data redundancyand improve data integrity. It was first proposed by Edgar F. Codd as an integral part of his relational model.

Normalization entails organizing the columns (attributes) and tables (relations) of a database to ensure that their dependencies are properly enforced by database integrity constraints. It is accomplished by applying some formal rules either by a process of synthesis (creating a new database design) or decomposition (improving an existing database design).

=> quá trình chuẩn hóa DB sẽ áp dụng 1 số luật (các dạng chuẩn) để thiết kế các bảng cơ sở dữ liệu sao cho có thể giảm thiếu tối đa dư thừa dữ liệu, sự chính xác của truy vấn dữ liệu, tăng performance truy xuất DB,..

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Java EE 7: Building Web Applications with WebSocket, JavaScript and HTML5

Purpose

how to create an application that uses the WebSocket API for real-time communication between a client and a server:

• Create a Java Platform, Enterprise Edition 7 (Java EE 7) application that uses the WebSocket API
• Use the OnOpen and OnMessage WebSocket lifecycle events to perform different actions on the Java EE 7 application.
• Define a client-side WebSocket endpoint by using JavaScript
• Operate on Plain Old Java Objects (POJOs), in real-time, with actions invoked from a web browser client

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ZK - Difference Between @load,@save,@bind

Can someone please explain me the difference between @load,@save,@bind with an example, i have read about them but i got more confused about the basic difference between them. they all look and work in somewhat same manner.
what does it mean when i write something like below

<textbox value="@load(vm.address.streatName)"/>
<datebox value="@save(vm.trip.leaveDate)"/>
<label value="@bind(vm.name)"/>

thanks in advance

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MVC vs Flux

Flux is the application architecture that Facebook uses for building client-side web applications. It complements React's composable view components by utilizing a unidirectional data flow. It's more of a pattern rather than a formal framework, and you can start using Flux immediately without a lot of new code.

Flux applications have three major parts: the dispatcher, the stores, and the views (React components). These should not be confused with Model-View-Controller. Controllers do exist in a Flux application, but they are controller-views — views often found at the top of the hierarchy that retrieve data from the stores and pass this data down to their children. Additionally, action creators — dispatcher helper methods — are used to support a semantic API that describes all changes that are possible in the application. It can be useful to think of them as a fourth part of the Flux update cycle.

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ZK reference

ZK is a component-based UI framework that enables you to build Rich Internet Application (RIA) and mobile applications without having to learn JavaScript or AJAX. You can build highly-interactive and responsive AJAX web applications in pure Java. ZK provides hundreds of components^[1] which are designed for various purposes, some for displaying large amount of data and some for user input. We can easily create components in an XML-formatted language, ZUL.
All user actions on a page such as clicking and typing can be easily handled in a Controller. You can manipulate components to respond to users action in a Controller and the changes you made will reflect to browsers automatically. You don't need to care about communication details between browsers and servers, ZK will handle it for you. In addition to manipulating components directly i.e. MVC (Model-View-Controller) pattern ^[2], ZK also supports another design pattern, MVVM (Model-View-ViewModel) ^[3] which gives the Controller and View more separation. These two approaches are mutually interchangeable, and you can choose one of them upon your architectural consideration.

Architecture of ZK

Simple Architecture

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Begin using Git

What is GIT

Git is a distributed revision control and source code management system with an emphasis on speed. Git was initially designed and developed by Linus Torvalds for Linux kernel development. Git is a free software distributed under the terms of the GNU General Public License version 2.

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LEFT JOIN vs. LEFT OUTER JOIN in SQL

As per the documentation: FROM (Transact-SQL):

<join_type> ::= 
    [ { INNER | { { LEFT | RIGHT | FULL } [ OUTER ] } } [ <join_hint> ] ]
    JOIN

The keyword OUTER is marked as optional (enclosed in square brackets), and what this means in this case is that whether you specify it or not makes no difference. Note that while the other elements of the join clause is also marked as optional, leaving them out will of course make a difference.
For instance, the entire type-part of the JOIN clause is optional, in which case the default is INNER if you just specify JOIN. In other words, this is legal:

SELECT *
FROM A JOIN B ON A.X = B.Y

Here's a list of equivalent syntaxes:

A LEFT JOIN B            A LEFT OUTER JOIN B
A RIGHT JOIN B           A RIGHT OUTER JOIN B
A FULL JOIN B            A FULL OUTER JOIN B
A INNER JOIN B           A JOIN B

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Add Kendo UI into Angular Quickstart sample

SystemJS is a dynamic ECMAScript (ES) module loader that is used by Angular Quickstart and other projects.

To use Kendo UI components for Angular with SystemJS, you have to explicitly list the package entry points. This article demonstrates how to implement the required configuration when you use the Angular Quickstart project template.

The source code for the completed sample project is available on GitHub at telerik/kendo-angular-quickstart.

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