PART A DATABASE

1.    What ethical / legal issues need to be considered when implementing this database? Explain

Some issues are taking copyright into consideration, and download of music illegally. Another is to make sure information is not misused, and information theft. An example of this is using the whole duration for the song preview resulting in the download of the song illegally. To prevent both of these issues the person responsible for creating the database should consider only taking and using only a part of the song.

2.    Discuss what advantages such a system has over conventional methods of organizing and previewing music?

Using Access to create a database based on music makes it easier for customers and the audience to navigate around the database. A database like this uses buttons and a menu. Another advantage for a database like this is that it is an easy way to to get onto at home instead of moving around and going out. The preview of the song provides an easier help for the consumer to know how and what the music sounds like. Putting a database like this on the internet will make it easier for those disabled who arent able to walk around freely to have easy access to preview of music.

3.    Create a “data dictionary” for your database.

• Song title- name of the song (text)
• Album Cover- image of the album where the song is from (attachment)
• Song Artist- Name of the song artist (text)
• Song Sample- a 30second preview of song (attachment)
• Duration- The whole song's duration in seconds. (numbers)
• Cost- price of the song (AUD)
• Genre- the style of music (text)

4.    “Storyboard” how the user will navigate through your database, ie. the path the user follows to get from one form to the next.

KEY TERMS

Protocol- the customs and regulations dealing with diplomatic formality, precedence and etiquette.

Types of protocols:

• TCP/IP- communication protocol for the internet.
• HTTP- creates a secure channel over an insecure network.
• SMTP- internet standard for electronic mail transmissions acroos internet networks.
• POP- an application used by email users to receive email from a remote server connection.
• FTP- it is a standard network protocol used to copy a file through a type of network such as the internet.

GUI- It is a graphical user interface to a computer. The first interface to a computer was more based on text-and-keyboard, and was brief. Before GUI came into existence DOS was before it. DOS is an example of the typical computer interface before GUIs

DATA TRANSMISSIONS- serial&parallel
Parallel- Multiple bits are sent to multiple different channels within the same path or cable. They often have a wider data bus than serial devices. As a result parallel transmissions have faster bit rate than serial transmission bit rate.
Serial- Instead of being sent at the same time, in this type of transmission bits are sent sequentially, within the same wire or channel. This can reduce cost but slow down transmission.

URL- It is the global address of documents and others on the world wide web. URLs are made up of different parts the first part is the protocol identifier, this identifies which protocol to use. The second part is the resource name, this is where the IP address comes in hand.

ERROR DETECTION- this refers to a class of techniques in detecting messages.