COMP 7480

Chuck的复习手记

MEAN mongodb, Express, AngularJS, Node
LAMP linux, Apache, MySQL, PHP
DOM document object model
ORM object-relation mapping
URL Uniform Resource Locator
HTML Hyper Text Markup Language
- define the content of a document.
CSS Cascading Style Sheets
- defines the style and formatting

HTML block level or inline elements：

• block element ：

  • takes up the full width available
  • line break before and after it.

• inline element :

  • takes up as much width as necessary
  • not force line breaks.

The HTML DOM is a standard for how to get, change, add,or delete HTML elements

IP Addresses ： unique
so that communications can be routed to the correct computer.

Domain Names

• The Domain Name System (DNS) convert a domain name into a valid IP address.
• Easier to remember and the names reflect the identi ty of the owner.
• The DNS consists of a number of dedicated servers that maintain naming information for different zones.
• The mapping between domain name and an IP address can change, so the same name can migrate between different host systems.

POST vs GET：

• Data in a GET string is limited to what we can stuff into the request line (URL)
• The total number of POST string can be arbitrarily large.
• GET string can be included in the URL (Hence, can be bookmarked)
• When using GET, all variable names and values are displayed in the URL

Database：

A collection of information that is organized so that it can easily be accessed, managed, and updated.

MVC Framework:

• Model (data)
• View (User Interface)
• Controller (Logic)

Object-Relation Mapping

• maps database rows to objects
• ORM abstracts everything from the database, and the application codes interacts only with their objects and methods.
• We can easily change our database implementation (e.g., MySQL, MongoDB), without the need of changing the code.

Node.js

• Node.js is good for IO heavy apps.
• Node.js is asynchronous (Non-Blocking)
• It won’t wait during IO operations.

CRUD (create, retrieve, update and delete) 所谓增删查改
AJAX （Asynchronous JavaScript and XML ）
Update a web page without reloading the page.

• Git is a revision control system,a tool to manage the source code history.
• GitHub is a hosting service for Git repositories.

Sessions：

• The data is stored in the server side, in a session store database.
• Uses a cryptographically random session ID to identify a user.

Cookies：

• Basically, cookies are just text messages.
• A website can store one or more of them to the client machine.
• If you visit the website again, these cookies that were stored earlier can be read.