Explore BrainMass


Business Rules and Crow's Foot ERD

Use the attachment to complete the problem. 1. Identify each relationship type and write all of the business rules. 2.Create the basic Crow's Foot ERD. Examples here:

Constructing a Good Form Design

Speedy Spuds is a fast-food restaurant offering all kinds of potatoes. The manager has a 30-second rule for serving customers. Servers at the counter say they could achieve that rule if the form they must fill out and give to the kitchen crew were simplified. The information from the completed form is keyed into the computer sys

Internet Terminology Confusions/Network

1. Why does the Internet need HTTP, TCP, IP and DNS? Why isn't the Internet Protocol (IP) enough to do the job? Please reply to these specific points of confusion. 2. Another thing that puzzles me is that sometimes when I type a uniform resource locator (URL), I was told that the host named in the URL does not exist. Yet often

Calculate Diffie-Hellman Symmetric Key, R1, and R2

(2) In the Diffie-Helman protocol, g=7, p=23, x=3, and y=5. a) What is the value of the symmetric key? b) What is the value of R1 and R2? Possible Variations of the initial data 1) g=5, p=19, x=7, and y=3 2) g=11, p=31, x=3, and y=9 3) g=7, p=43, x=5, and y=7

Communication recovery plan

Consider a natural or man-made disaster, and discuss how a communications network could be recovered from such a disaster. Refer to communication issues experienced during and after the tsunami in December of 2004 or similar issues experienced in the aftermath of Hurricane Katrina in August of 2005. Provide at least one resource

Network Protocols

Why are network protocols needed? How do you decide which protocol is more suitable for a network implementation?

Web Applications

Why do vclidation controls improve the performance of a web application?

Microsoft Excel Functions

For the data attached is it possible to make excel highlight (Yellow) rows of results that are over 500. I would like this to happen every time I enter a value > 500. I would also like a count at the top of the spreadsheet to display the number of times this happens for a Pre-op and an Operational.

Hard Disk Capacity/Access Time

Assume the specification of a hard disk drive shows the following characteristics: 16 surfaces 1024 tracks per surface 256 sectors per track 512 bytes/sector Track-to-Track seek time of 10 milliseconds Rotational speed 3,000 rpm (a). What is the capacity (in MB) of the hard disk drive? (b). What is the access time (in

calculate(formula) the following

I would like to know how to calculate(formula) the following. There are 20 gigabyte of space on a computer's hard disk. I transfer data via a telephone line (connection) at the rate of 14,400 bits per second. At this rate how long will it take to fill the available storage space?

Data Warehousing

You have been asked to design a star schema for a large hotel chain. Review the information package given for a hotel chain in Figure 5-6 in the attached file. Use this information package to design the STAR schema. Problem: - Draw the star schema. - List the attributes for each table. - Designate a primary key for ea

Data Flow Chart

Draw a Data Flow Chart and then develop an application that allows a user to enter a stock transaction and determine the stockbroker's commission. Each transaction includes the following data: the stock name, price per share, number of shares involved, and the stockbroker's name. Assume price per share = P. The stockbrokers co


I'm trying to setup a vlookup. Basically, if I have a dollar amount for my ticket ie: $5012 and I'm going to location 3, I want it to call on the table in the second tab, and pull data from cell E5 (and tell me the premium)... and so on for the other numbers. The dollar amount is to be in a range, the location is an exact

Create a Visual Studio Application

Individual Project Deliverable Length: One Visual Studio.NET project Details: Create a Visual Studio.NET 2005 web application with one aspx form. Place a CheckBoxList, TextBox, Button, and Label control on the form. Use a RequiredFieldValidator control that verifies the user entered a string in the Textbox control. W

Hard Disk Access

A certain hard disk has 480 cylinders, 16 tracks, and 32 sectors of 512 bytes each. It spins at 4800 revolutions per minute, and has an adjacent cylinder seek time of 80 msec, and a max seek time of 100 msec. Switching between tracks in the same cylinder is instantaneous. Use this information to answer the following 4 questions.

Edges and Graphs Cut Offs

The solution below got cut off. Please let me know what is the total solution: <b>problem:</b> The number of strongly connected components in a graph G is k. By how much can this number change if we add a new edge? <b>solution:</b> If we add an edge to a biconnected graph with k strongly connected components, then the

UML notation solutions

1. The package on the left contains the classes in a payroll system. The package on the right is a payroll tax subsystem. a. What technique would you use to integrate the tax subsystem into the payroll system? b. Show how you would solve the problem. c. Show what modifications you would make to the existing classes or what

Excel S4-R1 Copy Worksheet

Excel S4-R1 Copy the Week 2 worksheet, positioning the new sheet after Week 3. 2. Rename the Week2 (2) worksheet as Week 4. 3. Delete the Week 3 worksheet 4. Copy the Week 2 worksheet, positioning the new sheet between Week 2 and Week 4. 5. Rename the Week2 (2) worksheet as Week3. 6. Insert a new worksheet positioned bef

Inventory Units Purchase Reports

1. Dana Hirsch, manager of The Waterfront Bistro, has asked you to review the Inventory Units Purchased report and modify it to make it more readable and to view as much data as possible in one window. 2. Make the following changes: a. Freeze panes so you can scroll the worksheet without losing the column and row headings.

Protocol should take into account the following situations: Messages

Design and describe an application-level protocol to be used between an automatic teller machine and a bank's centralized computer. Your protocol should allow a user's card and password to be verified, the account balance (which is maintained at the centralized computer) to be queried, and an account withdrawal to be made (that

Comp Sci

1. Use Run-Length encoding to compress the following: 00110 00000 00000 10001 Note: Two different approaches to run length encoding were presented. You may use either approach for this problem. 2. Using front-end compression to reduce the data storage requirements for the following list. Uncompressed Compressed

Interchange Contents of Working Registers

Create a stack at 1000h. Use the stack to interchange the contents of all of the working registers. Exchange AX with DX, BX with CX, and DI with SI. Use unique data for each register to test the program.

IT System of Any Company

Create a chart that shows the breakdown of the overall (big picture) IT systems at a big (any) company or breakdown a particular aspect of the IT systems such as the network or the business applications systems.

Pure Aloha Question

A group of N stations share a 56-kbps pure ALOHA channel. Each station outputs a 1000-bit frame on an average of once every 100 secs, even if the previous one has not yet been sent (stations are buffered). What is the maximum value of N?

Selective-Reject ARQ Systems

Consider a selective-reject ARQ system with a window size of 3. a) Circle (or shade or bold) the sender window after frames 0 through 3 have been sent and ACK 2 has been received 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 b) Circle (or shade or bold) the sender windows after frames 4 through 6 have been transmitted, ACK 5 and N

Excel 3 questions

Please see attached excel sheet for div sheets. 1.In the Sales by Div sheet, only the Qtr subtotals should be displayed, Do not show the details. 2.In Totals & Averages sheet, please add average shown as belowPlease refer to word for questions and make correction to excel sheet. 3.In column C of the Div Awards sheet,


I LIKE THE HELP OF AN OTA PLEASE. The Fastgro Fertilizer Company distributes fertilizer to various lawn and garden shops. The company must base its quarterly production schedule on a forecast of how many tons of fertilizer will be demand from it. The company has gathered the following data for the past three years from its sale

Hand Held Video Game

I need to design a control unit for a simple hand held video game in which a character on the display catches objects. I only need to show the transition diagram...NOT A CIRCUIT! The input to the control unit is a two-bit vector in which 00 means "move left", 01 means "move right", 10 means "do not move" and 11 means "halt."