Cyberspace Quiz 4
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Digital Graphics | Computer-based media applications that support creating, editing, and viewing 2D and 3D images and animation
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| RGB color | a method of specifying color digitally using values for the intensity levels of red, green, and blue (RGB) as combined to create all colors
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| Image resolution | expressed as the number of horizontal and vertical pixels
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| Higher resolutions contain more ____ and are ____ quality | data, higher
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| How are the file size of bitmaps reduced? | by cropping
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| Bitmaps are _______ ______ | resolution dependent
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| Image compression | any technique that recodes data in an image file so it contains fewer bits
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| What are two types of image compression | lossless compression, lossy compression
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| What are bitmap graphics composed of? | grids and dots, color of each dot is stored as a binary number. They do not have a fixed physical size
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| What is graphic software used for? | to modify or edit bitmap graphics. they can be used to modify individual pixels to retouch photographs, wipe out red eye
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| What do vector graphic basics contain? | instructions for re-creating a picture
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| Vector graphics resize ____ than bitmaps | better
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| Vector graphics usually require _____ storage space than bitmaps | less
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| Vector graphics are not usually as _____ as bitmap images | realistic
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| Vector Graphics are _____to edit an object in vector graphic than an object in a bitmap graphic | easier
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| What does rasterization do | It superimposes a grid over a vector image and determines the color for each pixel
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| What does tracing software do? | it locates the edges of objects in a bitmap image and convert the resulting shapes into vector graphic objects
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| What does SVG stand for | scalable vector graphics
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| What are SVG and Flash | vector graphic formats for the web
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| What are advantages of using vector graphics | consistent quality, searchable, compact file size
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| What are 3D graphics stored as | a set of instructions that contain locations and lengths of lines forming a wireframe
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| What does rendering 3D graphics do | It covers a wireframe with a surface color and texture
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| Digital video | stores a progression of digital photographs and displays them at 24 to 30 photos, or frames, per second to give the illusion of a smoothly flowing scene
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| What do digital cameras do | they store footage as a series of bits
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| What do analog video cameras do | They store video signals as a continuous track of magnetic patterns
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| What do videoconferencing cameras (web cam) do | attach directly to a computer
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| Which formats are ideal for editing | Raw, uncompressed formats
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| What can video capture software do | Control the transfer process, decrease video display size, reduce the frame rate, compress data
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| Interactive media | refers to digital media that involve user interaction for education, training, or entertainment
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| Video game | uses 2D or 3D interactive digital media for gaming entertainment, for individuals or groups using handheld devices, game consoles, computers, and the Internet
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| What is virtual reality | a computer-simulated, three dimensional environment that can be explored and manipulated by a user
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| What is augmented reality | displays computer-generated information over objects viewed in real time space
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| What does DRM basics stand for? | Digital rights management
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| What is DRM | a collection of techniques used by copyright holders to limit access and use of digital content
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| What is signal scrambling | a term commonly used for obscuring cable or satellite television images until they are unscrambled by a set-top box or other authorized mechanism
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| What is a digital watermark | a pattern of bits inserted at various places in an image or a content stream that can be used to track, identify, verify, and control content use
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| What is a database | A collection of data organized so you can access, retrieve, and use it
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| what is DBMS | Database software that stands for database management system
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| What is data integrity | the degree to which data is correct, the more errors the data contains, the lower the integrity
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| What is GIGO | garbage in = garbage out, incorrect data in = incorrect information out
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| What are qualities of valuable information | accurate, verifiable, timely, organized, accessible, useful, cost-effective
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| Data hierarchy | refers to the manner in which data in a database is organized into sequential levels of detail
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| What is a record in the hierarchy of data | a group of related fields
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| What is a key field? | also called primary key, it uniquely identifies each record
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| What is a data file | a collection of related records stored on disk
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| What is a file processing system (flat file) | each area or department within an organization has own set of files. the records in one file may not relate to records in any other file
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| Database approach | many programs and users can share data in database, it secures data so only authorized users can access certain data
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| What is file maintenance | procedures that keep data current
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| What are some examples of maintaining data | Adding records, changing records, deleting/flagging records
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| what is validation | the process of comparing data with a set of rules to find out if data is correct
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| What are validity checks (validation rules) | rules that reduce entry errors
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| What is a data dictionary | contains data about each file in database and each field within those files, can be used for validation checks
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| What do relational databases do | Stores data in tables that consist of rows and columns, stores data relationships, connects with data, normalization
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| Each row in a relational database has a ______ _____ | primary key
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| Each column in a relational database has a ____ | unique name
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| What does normalization do? | reduces data redundancy
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| What is a relationship in a relational database? | A connection within data
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| What is SQL and what does it do | Structured Query Language, it allows you to manage, update, and retrieve data. It has special keywords and rules included in SQL statements
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| What is query? | a request for specific data from a databaSE
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| What is query language | consists of simple, English-like statements that allow users to specify data to display, print or store
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| What do database management system reports do | allows user to design a report, retrieve data, then display or print reports. It is also called a report writer
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| What does DBMS do? | It provides means to ensure only authorized users can access data
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| What are access privileges | define activities that specific user or group of users can perform
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| What are read-only privileged: | user can view data but cannot change it
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| What are full-update privileges | user can view and change data
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| What is a data warehouse | a huge database system that stores and manages data required to analyze historical and current transactions
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| What is data mining? | a process used to find patterns and relationships among data
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| What is data mart | a smaller version of data warehouse
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| what is a web database | a database you access through the Web by filling in a form on a Web page
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| what i a database server | a computer that stores and provides access to a database
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
nicolefassak