Suppose you have an important message to send to a friend in another city, and you can use the telephone, email, real-time teleconference, fax, or overnight mail service. Discuss the advantages and disadvantages of each. See if you can think of a situation for each of the five options in which that particular option is the most appropriate choice.
If I had an important message to send to my friend and I had to use telephone: An advantage is that you can instantly connect to a person no matter how far they are and convey your message through a telephone. A couple big disadvantages is that if that person does not have a phone near them, they may not get the message in time. Also, because over the phone, there may be some miscommunication.
If I had an important message to send to my friend and I had to use email: An advantage would be that right there and then, the message is sent and in that person's inbox. A disadvantage is that using email can also bring miscommunication because it is all words. Also if you make a spelling error, you can accidently send something that is vulgar.
If I had an important message to send to my friend and I had to use real-time conference: An advantage would be that I could see and talk to my friend and see them, it would be like we are together but we are not. I think the only disadvantage would be that the internet connection might go bad.
If I had an important message to send to my friend and I had to use fax: An advantage would be that they would get my message exactly the way you write it up but not only does it take time to send the fax but sometimes if the connection is down then what happens is that the fax does not go through and the message just gets lost in space.
If I had an important message to send to my friend and I had to use overnight mail: I think that it is self evident that the biggest consequence would be that the message goes through overnight. It takes time and is not efficient.
Wednesday, March 16, 2011
Tuesday, March 15, 2011
Page 262-272 Reading Questions:
1. Key Terms:
-analog signals: a continuous wave
-bandwidth: the quantity of information that can be transmitted through a c ommunication medium in a given amount of time.
-bits per second: the standard unit of measure for modem speed.
-digital signal: a stream of bits
-direct connection: a dedicated direct connection to the Internet through a LAN with a computer having its own IP address
-ethernet: a popular networking architecture developed in 1976 at Xerox.
fiber-optic cable: high capacity cable that uses light waves to carry information at blinding speeds.
-Global Positioning system: a defense department system with 24 satellites that can pinpoint any location on the Earth.
-Local Area Network: netowrk in which the computers are physically close to each other usually in the same building.
-modem: a hardware device that connects a computer to a telephone line.
-network interface card: card that adds an additional serial port to a computer.
-port: socket that allow information to pass in and out.
-remote access: network access via phone line, TV cable
-router: programs or devices that decide how to route Internet transmissions.
-server: a computer especially designed to provide software and other resources to other computers over a network.
-telecommunication: long distance electronic in a variety of forms.
-wide area network: the network extends long distance.
wireless network: a network in which a node has a tiny radio or infrared transmitter connected to its network so it can send and recieve data through air rather than cables
2. Three general reasons for the importance of computer networking is: connects people from different ends of the world, information barrier is now open, communicate with people using long distance and truly understand culture.
3. Using LAN and wireless network, it makes these three general reasons more possible and efficient and convenient for people on the move. The only down fall is that the computer need to be close together.
4. Using WAN, the network extends over long distance. This helps with the communication with LAN and WAN.
-analog signals: a continuous wave
-bandwidth: the quantity of information that can be transmitted through a c ommunication medium in a given amount of time.
-bits per second: the standard unit of measure for modem speed.
-digital signal: a stream of bits
-direct connection: a dedicated direct connection to the Internet through a LAN with a computer having its own IP address
-ethernet: a popular networking architecture developed in 1976 at Xerox.
fiber-optic cable: high capacity cable that uses light waves to carry information at blinding speeds.
-Global Positioning system: a defense department system with 24 satellites that can pinpoint any location on the Earth.
-Local Area Network: netowrk in which the computers are physically close to each other usually in the same building.
-modem: a hardware device that connects a computer to a telephone line.
-network interface card: card that adds an additional serial port to a computer.
-port: socket that allow information to pass in and out.
-remote access: network access via phone line, TV cable
-router: programs or devices that decide how to route Internet transmissions.
-server: a computer especially designed to provide software and other resources to other computers over a network.
-telecommunication: long distance electronic in a variety of forms.
-wide area network: the network extends long distance.
wireless network: a network in which a node has a tiny radio or infrared transmitter connected to its network so it can send and recieve data through air rather than cables
2. Three general reasons for the importance of computer networking is: connects people from different ends of the world, information barrier is now open, communicate with people using long distance and truly understand culture.
3. Using LAN and wireless network, it makes these three general reasons more possible and efficient and convenient for people on the move. The only down fall is that the computer need to be close together.
4. Using WAN, the network extends over long distance. This helps with the communication with LAN and WAN.
Friday, March 11, 2011
Chapter 7
Large Databases often contain hundreds of interrelated tables.
Batch processing: users accumulate transactions and input them into the computer in large batches.
Teal Time computing: allows instant access to information
Interactive processing: replaced batch processing for most application
Client/server computing involves two-way communications between applications running on the "client" PC and the "server" OC.
Downsizing and Decentralizing: Using a client/ server approach, users can take advantage
Data Mining: the discovery and extraction of hidden predictive information from large databases.
HTML: language used to construct most Web pages
XML: designed with industrial strength database access in ming
Web database strategies revolve around directories.
Director are the heart of CRM systems
Object-oriented databse: make database construction and usage more flexible and stores software objects that contains procedures along with data
-->easy manipulations of various types of data
--> saves time by reusing objects
Relational: not good with unstructered data
Multimedia Databases: serve as indexes for art, photogrpahs, maps, cideo clips, and other media file
-More than 15,000 specialized marketing databases contain 2,000,000 names
Privacy: notion of access, physical proximity to the person and knowldge about that person
--> people need a certain amount of provacy to maintain their dignity and freedom
--> information of people can be a great value to society
--not explictly in the constituition
Networks make it possible for personal data to be transmitted almost anywhere instantly
Workplace monitoring technology enables managers to learn more than ever before about the work habits and patterns of workers.
Batch processing: users accumulate transactions and input them into the computer in large batches.
Teal Time computing: allows instant access to information
Interactive processing: replaced batch processing for most application
Client/server computing involves two-way communications between applications running on the "client" PC and the "server" OC.
Downsizing and Decentralizing: Using a client/ server approach, users can take advantage
Data Mining: the discovery and extraction of hidden predictive information from large databases.
HTML: language used to construct most Web pages
XML: designed with industrial strength database access in ming
Web database strategies revolve around directories.
Director are the heart of CRM systems
Object-oriented databse: make database construction and usage more flexible and stores software objects that contains procedures along with data
-->easy manipulations of various types of data
--> saves time by reusing objects
Relational: not good with unstructered data
Multimedia Databases: serve as indexes for art, photogrpahs, maps, cideo clips, and other media file
-More than 15,000 specialized marketing databases contain 2,000,000 names
Privacy: notion of access, physical proximity to the person and knowldge about that person
--> people need a certain amount of provacy to maintain their dignity and freedom
--> information of people can be a great value to society
--not explictly in the constituition
Networks make it possible for personal data to be transmitted almost anywhere instantly
Workplace monitoring technology enables managers to learn more than ever before about the work habits and patterns of workers.
Wednesday, March 9, 2011
Discussion Question #1: Database
A database is a collection of information stored in an organized form in a computer. One of the biggest web services that enables a database is Google. This is a search engine I used all week. A few other databases I used was Bing, Yahoo, and Wikipedia. Honestly, thinking about a world without databases actually gives me shivers down my spine. With databases, we have all the information in the world in our fingertips and without it I feel kind of empty. I mean, for almost everything, I use Google. When I am looking up research, looking for a recipe, looking for anything, Google is there for me. Without it, we would just be kind of limited in knowledge. In the internet, there is a huge, universal amount of information. With databases, all the information is stored in an organized form.
HW #1: Read p. 224-232 and do 4RQs
1. Define or describe each of the key terms listed in the "Key Terms" section. Check your answers in the glossary.
-browse: the process of finding information in a data base or other data source, such as the World Wide Web.
-computed fields
-database: a collection of information stored in an organized form in a computer.
-database program: a software tool for organizing the storage and retrieval of the information in the database.
-field: each discrete chunk of information in a database record
-export data: transmitting records and fields from a database program to another program
-import data: to move data into a program from another program or source.
-query: an information request
record: in a database, the information relating to one person, product, or event.
-query language: a special language for performing queries
report: a database printout that is an ordered list of selected records and fields in a an easy to read form
search: looking for a specific record
select record: looking for all records that match criteria
sort: arrange records in alphabetical or numeric order
SQL: a query language available for different data management systems.
table: a grid of rows and columns; on many Web pages tables with hidden grids are used to align graphical images.
2. What is the difference between a file manager and a data-base management system? How are they similar?
A file management is where hard copies of the files are managed in a storage or file cabinet. A database management is something that can accessed via a computer. They both retrieve information such as names, numbers, prices.
3. What is a query? Give example of the kinds of questions that might be answered with a query.
An information request is a query. A query can be a specific search like (GeorgeWashington) or it can request to select all information that match the criteria.
4. Describe the structure of a simple database using the terms file, record, and field in the description.
Databases are made up of table which are made up of records which are made up of fields.
-browse: the process of finding information in a data base or other data source, such as the World Wide Web.
-computed fields
-database: a collection of information stored in an organized form in a computer.
-database program: a software tool for organizing the storage and retrieval of the information in the database.
-field: each discrete chunk of information in a database record
-export data: transmitting records and fields from a database program to another program
-import data: to move data into a program from another program or source.
-query: an information request
record: in a database, the information relating to one person, product, or event.
-query language: a special language for performing queries
report: a database printout that is an ordered list of selected records and fields in a an easy to read form
search: looking for a specific record
select record: looking for all records that match criteria
sort: arrange records in alphabetical or numeric order
SQL: a query language available for different data management systems.
table: a grid of rows and columns; on many Web pages tables with hidden grids are used to align graphical images.
2. What is the difference between a file manager and a data-base management system? How are they similar?
A file management is where hard copies of the files are managed in a storage or file cabinet. A database management is something that can accessed via a computer. They both retrieve information such as names, numbers, prices.
3. What is a query? Give example of the kinds of questions that might be answered with a query.
An information request is a query. A query can be a specific search like (GeorgeWashington) or it can request to select all information that match the criteria.
4. Describe the structure of a simple database using the terms file, record, and field in the description.
Databases are made up of table which are made up of records which are made up of fields.
Wednesday, February 9, 2011
Chapter 7
Most Modern database management programs support a standard language for programming complete queries called SQL
BQ: What does SQL stand for?
Personal information manager (PIM): an electronic organizer
-automates some or all or the following functions: address/phone book, appointmenr calender, to do list, miscellaneous notes
-handheld computers can share information with applications such as iCalender running on PCs and Macintoshes.
File Manager: enables users to work with one file a time
Database management system (DBMS): manipulates data in a large collection of data of files, cross-referencing between files as needed.
-used interactively or can be controlled by other programs.
To most users, a relational database program is one that allows tables to be related to each other.
-changes in one table are reflected in other tables automatically
To computer scientists, the term relational database has a technical definition related to: the underlying structure of the data and the rules specifying how that data can be manipulated.
BQ: What does SQL stand for?
Personal information manager (PIM): an electronic organizer
-automates some or all or the following functions: address/phone book, appointmenr calender, to do list, miscellaneous notes
-handheld computers can share information with applications such as iCalender running on PCs and Macintoshes.
File Manager: enables users to work with one file a time
Database management system (DBMS): manipulates data in a large collection of data of files, cross-referencing between files as needed.
-used interactively or can be controlled by other programs.
To most users, a relational database program is one that allows tables to be related to each other.
-changes in one table are reflected in other tables automatically
To computer scientists, the term relational database has a technical definition related to: the underlying structure of the data and the rules specifying how that data can be manipulated.
Chapter 7: Database Applications and Privacy Settings
Database: collection of information that has been organized in some fashion making it easy to reference and retrieve.
-->based on last name in combination with the first name
-->unique identifier is combination of two fields
BQ: What is a unique identifier?
Database: storage container for data
Google is one of the most successful companies on WWW.
-Search for Web pages, facts, quotes, etc.
-200 million queries
Launched by Sergey Brin and Larry Page
-Stanford PhD students
-new approach in seach technology
-marks a page relevence by the number of times other related web pages link to it, not how often a word appears)
BQ: Discuss Sergey Brin and Larry Page
A database: collection of information stored on computer disks
Database Software:
-application software
-Designed to maintain databases
Advantages offered by computerized databases:
-make it easier to store large quantities of information
-make it easier to retrieve information quickly and flexibly
-make it easy to to organize and reorganize information
Database Anatomy:
-Database programs: a software rool for organizing the storage and retrieval of information
-Database: a collection of information sored in an organized form in a comuter
--> typically composed of one or more tables or a collection of related information and records
BQ: What is a database program?
A record is the information relating to one person, product, or event
BQ: What is a record?
-Each discrete piece of information in a record is a field.
The type of information a field can hold is determined by its Field Type or Data Type.
Database programs provide tou with more than one way to view data: Form views: show one record at a time or List Views: display several records in lists similar to the way a spreadsheet displays data.
In any view, fields can be rearranged without changing the underlying data
Import: recieve data in the form of text files
Browse: navigate through information
Query: find records that match specific criteria
Sort: rearrange records
Print reports, labels, and form letters: a report is an ordered list of selected records and fields in an easy to read format
1/8/11
-Google is one of the most successful companies on WWW.
--> search for web pages, facts, quotes, etc
--> 200 million queries a day
-Lauched by a Sergey Brin and Larry Page
--> new approach in seach technology
What good is a database:
Database: a collection of information stored on computer disks
Data: pieces of information
-A primary key uniquely identifies a record.
A table is a collection of records of the same type.
Advantages offered by databases:
--> easier to store large quantitites of information, retrieve information quickly and flexibly
-->based on last name in combination with the first name
-->unique identifier is combination of two fields
BQ: What is a unique identifier?
Database: storage container for data
Google is one of the most successful companies on WWW.
-Search for Web pages, facts, quotes, etc.
-200 million queries
Launched by Sergey Brin and Larry Page
-Stanford PhD students
-new approach in seach technology
-marks a page relevence by the number of times other related web pages link to it, not how often a word appears)
BQ: Discuss Sergey Brin and Larry Page
A database: collection of information stored on computer disks
Database Software:
-application software
-Designed to maintain databases
Advantages offered by computerized databases:
-make it easier to store large quantities of information
-make it easier to retrieve information quickly and flexibly
-make it easy to to organize and reorganize information
Database Anatomy:
-Database programs: a software rool for organizing the storage and retrieval of information
-Database: a collection of information sored in an organized form in a comuter
--> typically composed of one or more tables or a collection of related information and records
BQ: What is a database program?
A record is the information relating to one person, product, or event
BQ: What is a record?
-Each discrete piece of information in a record is a field.
The type of information a field can hold is determined by its Field Type or Data Type.
Database programs provide tou with more than one way to view data: Form views: show one record at a time or List Views: display several records in lists similar to the way a spreadsheet displays data.
In any view, fields can be rearranged without changing the underlying data
Import: recieve data in the form of text files
Browse: navigate through information
Query: find records that match specific criteria
Sort: rearrange records
Print reports, labels, and form letters: a report is an ordered list of selected records and fields in an easy to read format
1/8/11
-Google is one of the most successful companies on WWW.
--> search for web pages, facts, quotes, etc
--> 200 million queries a day
-Lauched by a Sergey Brin and Larry Page
--> new approach in seach technology
What good is a database:
Database: a collection of information stored on computer disks
Data: pieces of information
-A primary key uniquely identifies a record.
A table is a collection of records of the same type.
Advantages offered by databases:
--> easier to store large quantitites of information, retrieve information quickly and flexibly
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