What functional dependencies can you identify

Assignment Help Database Management System
Reference no: EM13186512

Problem 1:

Suppose you have a relation schema about teaching classes that has the following attributes: Class, Instructor, Time and Room

Based on your understanding of this scenario, what functional dependencies can you identify that hold on this relation?

Problem 2:

Research the definition of a "minimal cover". Explain it in your own words and give an example.

Reference no: EM13186512

Questions Cloud

Why would drop in foreign confidence in us ability to repay : A Wall Street Journal article, "As Fear of Deficits Falls, Some See a Larger Threat," describes the following threat of a high U.S. budget deficit: [T]he investors who finance our deficits by buying Treasury bonds and bills, especially the foreign..
Compute the molarity of the solution : The [Br] of the resulting solution if 0.672 M. Assuming the volume is additive, calculate the molarity of the first solution?
How many tickets will be sold : N(x)=-0.4x^2+8.8x+14 where x is the number of days since a concert was announced; when will sales peak and how many tickets will be sold.
How many watches must he repair to have the lowest cost : Bob owns a watch repair shop. He has found that the cost of operating his shop is given by C(x) = 4x2-296x+85 , where c is cost and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
What functional dependencies can you identify : Suppose you have a relation schema about teaching classes that has the following attributes: Class, Instructor, Time and Room - based on your understanding of this scenario, what functional dependencies can you identify that hold on this relation?
State camphor is mixed with methanol : Camphor is mixed with methanol, then sodium borohydride is added. Then boil, add mixture to ice and stir.
How many grams will be left after the first hour : In some chemical reactions, the rate at which the amount of a substance changes with time is proportional to the amount present. For the change of -glucono lactone into gluconic acid, for example, when is measured in hours.
State the standard deviation of the analytical method : The standard deviation of the analytical method was determined to be +/-2.3%. What is the standard deviation overall? And in order to reduce the overall standard deviation to +/- 5.0%
What is the probability that a randomly selected helproom : What is the probability that a randomly selected helproom client received help with Stat given that s/he is majoring in Business?

Reviews

Write a Review

Database Management System Questions & Answers

  Design update trigger on part table which raises error

Design the Update trigger on Part table which raises an error string if Count field of updated row has a higher value than value prior to Update.

  Develop a new information system

MGMT321 Group Project :  You were hired as an analyst to develop a new information system to automate the payroll transactions in a mid-size organization. The proposed system will contain employees’ data and interface with the organization’s General ..

  Determine cost of least expensive part in part table

Write a query to determine the cost of the least expensive part in the part table? Format the returned price in dollars and cents using the correct function.

  Describe the different operations of relational algebra

Describe relationships with the example. Also illustrate degree of relationship for that example. Describe the different operations of relational algebra with suitable example each.

  Implement direct-address table keys of stored elements

Suggest how to implement direct-address table in which keys of stored elements don't require to be distinct and elements can have satellite data.

  Patients post cardiac bypass surgery

Monitor Renal Outcomes in patients post cardiac bypass surgery?

  Sort ascending by consultant id and date opened

Sort ascending by consultant ID and Date Opened. Don't show tickets with category ID of 0. HINT: You will require to use SELECT query with an alias in builder for the column.

  Yrace history of the development of databases

In 500 words or less, trace the history of the development of databases beginning with pre-computer days to the present.

  Create a data warehouse conceptual design

Create a Data Warehouse conceptual design using Star Schema Modelling and document all steps during the design process

  Integrity constraint prevent-data inserted in table

Integrity constraint prevent from happening when data is inserted in table which contains this constraint? Let INSERT, UPDATE, and DELETE actions on both child and the parent.

  Design database design for boingx aircraft company

You have been asked to design database design for BoingX Aircraft Company (BAC), that has two products: TRX-5A and TRX-5B HUD (heads-up display) units.

  Optimistic concurrency control sets few locks on the data

Optimistic concurrency control sets few locks on the data in the database, lowering the isolation level that you use in an application. This allows more applications to run concurrently and potentially increases the throughput of the applications. Th..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd