WHAT I DO NOT KNOW Flashcards
What is the purpose of a database
It is a program that stores data
How is data structured in a DBMS
Into files fields and records
What is a field
Name given to each separate item of data which is contained within the record
What are some of the data validation
Restricted choice
Length check
What is a table
Collection of related data held in a structured format within database. Consists of fields and records
What is a information system
Combination of computer hardware and software that allows you to create, present, store and process information
What is colour depth
Number of Colors a pixel can be
What is a PDF
Standard file format that captures all elements of printed document as an electronic image
How do you change a sound into a digital signal
By taking a sample every fraction of a second and storing this as a digital value
What is a worm
Malicious program that can replicate itself onto computers. Uses computer network to spread itself
What are the two types of cabling
Twisted pair cabling
Coaxial cables
What is a LAN
Local Access Network
What is a WAN
Wide Area Network
What is CSS
Cascading style sheet - style sheet language used for describing look and formatting of document written in marking language
What is a network
Series of computers linked together so that they can send and receive data
