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A voice signal is measured at 3.21692 V and it resides inside an interval from 3.20 V to 3.30 V.
a) How big is a single interval in volts?
b) Receivers have no choice but to decode the the binary sample value at the center of the interval. So, what would the received voltage of the sample be?
c) If the total range of voltages started at zero and there are 512 intervals, what would the maximum possible voltage be?
d) The original voice signal voltage and the decoded voltage value are different. What is this "round off error"?
e) What is the ratio of received voltage to round off error in absolute and in dB form? This is signal to noise ratio for this digital system.
Exceptions in credit card transactions can aid us fraudulent use of credit card. Suggest two methods for outlier detection.
Create a report which identifies five most expensive bicycles. The report must list bicycles in descending order from most expensive to lease expensive, the quantity on hand for each, and the markup percentage for each.
You have probably seen that already when you tried to create an E-R diagram. Visio uses notation and graphical shapes that are not the same as those in your text. If you look at some of the links to schemas, you will see a similar sort of thing.
Using Join, list the items each customer ordered where the billing_price was lower than the item price (item, billing_price, and price). Sort the results alphabetically by customer name.
Create a function that returns the day of the week for a specified date. Create a trigger that displays the message "Emp table updated" when an update to the employee table increases the employee's basic salary.
Design a query that will allow the finance department to determine the commissions paid to specific employees of the sales department for the month of December.
What is file organization? what are file organization techniques.explain in detail? explain random file organization technique, multikey file organization technique?
Draw an object-oriented model for a small private airport database that is used to keep track of airplanes, their owners, airport employees, and pilots.
How to interactively query a database by using SQL statements and SQL*PLUS commands and how to use spool command to save an interactive session within SQL*PLUS.
Create a data warehouse for electronics store chain. Chain has 20 stores in 5 cities. Each store has different sections comprising computers, DVDs, TVs, audio, home appliances etc.
Illustrate all the data in each of four tables. Don't show foreign key columns. Write down the names and e-mail addresses for all customers who have had stove repair which cost more than $50.
First construct a Data Warehouse Bus Matrix to identify the company's business processes and any likely Data Marts and design the star schema for any Data Marts you have identified.
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