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2.3.1 Website development (Tags for HTML (Image = <img>, Anchor <…
2.3.1 Website development
HTML
Hyper Text Markup Language
Describes how a document should be organised and presented
It is a programming language which controls the appearance of a web page.
Tags for HTML
Image = <img>
Anchor <a>
Ordered list <ol>
Unordered list <ul>
List = <li>
CSS
It is a plain text document that provides a definition of the formatting and layout of the various elements in a HTML file. They help facilitate consistent design. It is a language that describes how the HTML elements in a web page should be displayed.
Client side processing
This splits the processing workload between the server computer which provides resources and services and the client computer which requests services
Server side processing
To query a database you must use server side processing as the server must govern the security of the database and can only do that by storing the data at their side
Encryption
An encryption key is a word or code selected by the user to govern the encryption process
Example
Data is encrypted before transmission by the mathematical application of a key
On receipt the data is decrypted back to plain text using the appropriate decryption key
Https
Hypertext Transfer Protocol Secure
When a user connects to a website via a HTTPS a 'secure session' is created
It is used whe the information being communicated is sensitive or confidential such as credit/debit card details
Digital signatures
It is included with a message and is used to prove that the sender is who they claim to be.