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35 Cards in this Set
- Front
- Back
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what is a database?
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a self describing collection of integrated records
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what are the 4 major components of a database?
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1. entity
2. attributes 3. records 4. relationships 5. metadata |
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what is a data model?
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a logical representation of the data in a database that describes the data and relationships that will be stored in the database
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what is an E-R data model and what are the components of it?
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an Entity-relationship data model
Components: 1. entity 2. attributes (describe characteristics of entity) 3. identifier (attritube whose value is associated with one instance of an entity. ex. primary key) 4. relationships (connection between entities) |
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what network element device prevents intrusion?
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a firewall
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what is normalization?
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the process of coverting poorly structured tables into two or more well-structured tables
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how do you transform a data model in a database design?
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-convert data model into tables, relationships, and data constraints
1. entities into tables 2. attributes into fields/columns of the tables 3. identifiers of each entity into a primary key of the table. every table has to have a primary key 4. expresses the relationships by defining foreign keys 5. normalization, as necessary |
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what is a primary key and why do databases use them?
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-an attribute/s which uniquely identify a record in a table
1. every table must have a primary key 2. the data must be static (value of PK cannot change over time) 3. ALWAYS a required field |
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what does DBMS stand for and what is it?
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Database management system
the computer program used to manage and query a database. |
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What does the acronym C.R.U.D. stand for?
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Create
Read Update Delete |
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why should you use the auto-number feature for a primary key?
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Primary key's can't change value and Auto-number helps make sure value is static
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what are the 2 types of Business Process Modeling Notation (BPMN)? (5 points)
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1. Swimlane
2. Standard |
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what does LAN stand for and what is it?
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LAN= Local Area Network
A) computers connected on a single company site B) Usually located in a small area (home, office building/s) |
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what does WIMAX stand for?
What is it? |
Worldwide Interoperability for Microwave Access
a telecommunications techonoloy that provides fixed, nomadic, portable, and fully mobile internet access |
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What is a modem? How is a DSL modem different from an older modem?
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Modem- a device to produce a signal to can be transmitted easily and decoded to reproduce the original digital data
Old modems used Narrowband (less than 56 kbps), DSL uses Broadband (more than 256 kbps) |
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What does D.S.L. stand for? and how does it work?
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Digital subscriber line
1. operates over telephone lines 2. data signals do not interfere with voice telephone service 3. faster data transmission than dial-up |
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What is encryption and how does it work?
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encryption is the process of transforming clear text into coded text
uses algorithms to encrypt data. Algorithm requires a key to encrypt and decrypt data |
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What is Symmetic encryption?
What is Asymmentric Encryption? |
Symmetric encryption- same key encrypts and decrypts algorithm
Asymmetric encryption - different keys are used. One key encrypts data, another key decrypts data (this one is more complicated, therefore more secure) |
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What are functional processes?
What are functional applications? |
business processes that support a single organizational function
a computer program that supports or possibly automates the major activities in a functional process |
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What are some issues with functional processes?
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isolated functions cause:
1. data duplication 2. Disjointed business processes 3. Lack of integrated enterprise (or competitive/market) information 4. Operational and intangible costs |
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What are the stages of Business Process Management (BPM)?
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1. model as-is function
2. evaluate functional application and select best fit 3. implements the functional application in the contect of the particular functional process |
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what does CRM stand for and what is it?
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Customer Relationship Management
CRM applications integrate all of the primary business functions depicted in Porter's Value Chain |
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what is business intelligence? What is it's purpose?
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BI represents the tools and systems that play a key role in the strategic planning process of the corporation.
These systems all a company to gather, store, access and analyze corporate data to aid in decision-making. |
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What is data-mining and what is an example of a data-mining system?
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1. use sophisticated statistical techniques, regression analysis and decision tree analysis
2. used to discover hidden patterns and relationship 3. used to anticipate and predict SPSS Clementine: data mining system |
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What are the 4 business intelligence systems? What does each system do?
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1. Reporting system
2. Data-mining system 3. Knowledge management system 4. Expert Systems |
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What is market basket analysis?
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correlates past orders to determine purchasing frequency
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What are the 5 components of an Information system?
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1. Hardware
2. software 3. data 4. procedures 5. people |
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What is E-commerce?
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buying and selling goods and services over public and private networks
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What are the types of E-Commerce Merchant Companies?
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A) Business-to-customer (B2C)
B) Business-to-Business (B2B) C) Business-to-Government (B2G) |
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What are the 3-tiers for E-Commerce?
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1. User tier
2. Server Tier 3. Database Tier |
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What is web 2.0?
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refers to loose cloud of capabilities, technologies, business models, philosophies
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What are some Characteristics of Web 2.0?
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A) Users and use increases value
B) Organic user interface C) Mashups D) Participation and ownership differences |
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Why do companies use Business Process models?
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its a graphic picture that is anazlyzed for flows, constraints, and opportunities
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What are some characteristics of Fiber Optic cabling?
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vertical cabling
high bandwidth (high bandwidth allows for lots of data to travel over cable at once) |
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What are the criteria for selecting different networks?
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1. Cost
2. Performance 3. Other |
