Extra stuff 2 Flashcards
One fact about a DBMS
Allows data to be amended and controlled
Give examples of 3 computer hardware?
Printer
Motherboard
touch scren
Why is ROM required
Because external devices operate at a much slower speed than the buses
What does HTTPS stand for?
Hypertext Transfer Protocol Secure
What is a process in CS?
The activity of executing a program
What is a flowchart used for?
Plan out a programme
An Object in Object-oriented programming is?
An active program unit containing both data and procedures
Describe the difference between software and hardware giving examples of each?
Computer software, or simply software, is a part of a computer system that consists of data or computer instructions e.g. Microsoft office suite, in contrast to the physical hardware from which the system is built e.g. motherboard
Define a distributed system.
A distributed system consists of a collection of autonomous computers, connected through a network and distribution middleware, which enables computers to coordinate their activities and to share the resources of the system, so that users perceive the system as a single, integrated computing facility.
What is encryption used for?
The secure transfer for data between parties and the surety of stored data. Keys are used to give access to the encrypted data
Describe what is meant by implementation in computer science
Implementation is the task of turning an algorithm into a computer program.
Depending on the level of abstraction of the description of the algorithm, implementation can be anything between a straightforward translating task and a lengthy, difficult job.
Define an Flowchart
A flowchart is a visual representation of the sequence of steps and decisions needed to perform a process. Each step in the sequence is noted within a diagram shape. Steps are linked by connecting lines and directional arrows.
Describe the client-side activities of the internet include examples of the software involved?
Activities carried out by the user using the following software
Examples: browser, java applets, javascript, Macromedia Flash
Describe the server side activities of the internet include examples of the software involved?
Activities carried out by the server storing the information for the websites using the following software Web server Common Gateway Interface (CGI) Servlets PHP (Hypertext Preprocessor)
Describe the attributes of a computerised database
include keys and forms
A database file is a collection of sets of similar data, called records.
An item is what each item of data within a record is called.
The items are stored in fields.
Records all have the same sort of contents, but relates to a different object, they are usually represented as a row in a table.
A database is a collection of data arranged into related tables. How it is arranged depends on its normal form.
