Is there a polynomial algorithm for testing whether a

Assignment Help Database Management System
Reference no: EM13509329

1.Give an algorithm for testing whether a relation scheme is in BCNF. The algorithm should be polynomial in the size of the set of given FDs. (The size is the sum over all FDs of the number of attributes that appear in the FD.) Is there a polynomial algorithm for testing whether a relation scheme is in 3NF?

2.Prove that, if R is in 3NF and every key is simple, then R is in BCNF.

Reference no: EM13509329

Questions Cloud

Determine the density of neon gas : What is the density of Neon gas at standard temperature and pressure? The atomic mass of Neon is 20.18 atomic mass unit
Reasoning for identifying them as worthy of pursuing : Describe your reasoning for identifying them as worthy ofpursuing.
What was the west division minimum required return : The west Division of Cecchetti Coporation had average operating assets of $240,000 and net operating income of $42,200 in August. The minimum required rate of return for performance evaluation purposes is 19%
Find the total momentum of the system : Given a system composed of three bowling balls (6.52 kg each) one sliding east at a velocity of 20m/second the second sliding north with a velocity of 35 m/sec, find the total momentum of the system
Is there a polynomial algorithm for testing whether a : Prove that, if R is in 3NF and every key is simple, then R is in BCNF.
Calculate the dollar amount of ending inventory : Calculate the dollar amount of ending inventory shown on ABC's May 31 balance sheet using the FIFO method.
Find the gravitational potential energy of the locomotive : How much work does a steam crane need to do in order to lift a 108,500 kg locomotive back onto the track if the locomotive has been derailed into a ditch 3.25 meters below the level of the tracks
Cooperate-level strategy is applied to cooperative strategy : The rationale for a firm's cooperate-level strategy is applied to cooperative strategy
Compute the break-even point in composite unites : Compute the selling price per composite unit, compute the variable costs per composit unit and compute the break-even point in composite unites?

Reviews

Write a Review

Database Management System Questions & Answers

  Explain why data flow diagrams are developed in a hierarchy

Explain why data flow diagrams are developed in a hierarchy? What are the names of some levels in the hierarchy?

  Your company has put in the request for a new database

your company has put in the request for a new database system and you have been tasked with architecting the security

  Advantages and inconveniences of new relational scheme

Compare activity (quite theoretical) of the disk (in number of bytes) required for each of both relational. Write down the advantages and inconveniences of new relational scheme.

  Create an actual web page document

Modify the XML document in Exercise 2 to include a namespace URL from which the elements of the XML document in Exercise 3 will be associated with. Make any changes to the XML document that are necessary as a result of the namespace URL inclusion.

  Write problems and issues related with internet databases

Write down some of problems and issues related with internet databases? Consider security, performance, architecture issues.

  Design tool for relational databases

Entity relationship model is in wide use as a design tool for relational databases. Why do you think designers have chosen this model, and what makes it an effective design tool?

  Explain the need for key restructuring

Give at least three reasons why ETL functions are most challenging in a data warehouse environment.

  Study and modify the postgresql source code

Write a Assignment to study and modify the PostgreSQL source code, with a focus on one of the core modules - the buffer manager

  Execution of the SQL commands - Create Tables using SQL DDL

The appropriate SQL command which should be copied from your source code in MySQL and resultant tables, which must be screenshots to show the change due to the execution of the SQL commands

  Create an erd from a business problem

List all the business rules for the ABS ( Business rules are important because they define the conditions that the database must meet. For example, every Order must be associated with a valid Product.This prevents invalid Orders being entered into..

  Difference between e-r diagram and the data dictionary

E-R diagram specializes a logical graphic model and it doesn't contain any data type or data information in a database.

  Part 1 - reportwrite a 2000-word report that describes a

part 1 - reportwrite a 2000-word report that describes a suitable methodology from the literature for the purpose of

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