What is referential integrity

Assignment Help Database Management System
Reference no: EM131356979

a. What is a relation?

b. What is a tuple?

c. What is an attribute in a relational data model?

d. What is referential integrity?

Reference no: EM131356979

Questions Cloud

Compare motivation and empowerment : Write a paper in which you answer the following concepts:Compare motivation and empowerment.Define the components of empowerment.Analyze the implications of empowerment and delegation in a criminal justice organization.Analyze the role of trust in pe..
Why is it preferable to use a numeric based attribute : Why is it preferable to use a numeric-based attribute as the key attribute?- Why is it important that you identify all of the important relationships when developing an entity-relationship (E-R) diagram?
Prepare a table of entities and activities : Prepare an annotated table of entities and activities. Indicate on this table the groupings, bubble numbers, and bubble titles to be used in preparing a level 0 logical DFD.
What is the break-even point for each oven : Janelle Heinke, the owner of Ha'Peppas!, is considering a new oven in which to bake the firm's signature dish, vegetarian pizza. What is the break-even point for each oven
What is referential integrity : What is a relation?- What is a tuple?- What is an attribute in a relational data model?- What is referential integrity?
How would you handle the staff who is now upset : Gulf Port Ships, Inc. is a large shipbuilding company located in the Gulf Coast. One afternoon the firm made the decision to shut down operations due to an approaching hurricane and forecasted arrival of tropical storm force winds to the local are..
Identify top two used in organizations in todays environment : Identify the top two used in most organizations in today's environment and explain why. Identify the top two used in most organizations in today's environment and explain why.
Compute the expected production for next quarter : The effective capacity and efficiency for the next quarter at MMU Mfg. in Waco, Texas, for each of three departments are shown: Compute the expected production for next quarter for each department
Compare and contrast the data structures for data stored : Compare and contrast the data structures for data stored in a file and data stored in a relational table.- What is different about a recursive relationship in comparison to other relationships in a data model?

Reviews

Write a Review

Database Management System Questions & Answers

  Suggest a learning algorithm for the problem

What is required to defi ne a well-posed learning problem ?

  Create database applications that interface the internet

Create database applications that interface the internet. The document should be written to the CEO of a ficticious company or company of your choice.

  Contrast unstructured and structured data

Reflect on the textbook readings. Use examples to compare and contrast unstructured and structured data. Which type is more prevalent in a typical business environment

  Create a relational model from your er model

Create a relational model from your ER model. All keys should be clearly identified. Demonstrate that your database is in at least 3rd Normal Form. Write the DDL to create the tables for your design.

  Online registration application

Imagine an online registration application. Use your registration form as starting point for your analysis. Identify the entities that a potential database will need, along with their attributes.

  Find the decryption function and decipher

Find '(2007), '(2008), and '(b), where b is the integer obtained from the last four digits of your student number.

  How would you define a relational database

How would you define a relational database? What is "normalization" and why do we normalize DBs

  What model would you use for this estimation

What model would you use for this estimation? How accurate would it be and how would you obtain the estimate?

  Assignment on application using database tools

Assignment on Application Using Database Tools and Interactive Forms

  List all details of all the records in the customer table

ITECH 1006 - Database Management Systems Assignment. Create a text file called nnnnnnnn_query.sql (where nnnnnnnn is your student number).  The file should include the SQL statements necessary to display the following reports: List all details of a..

  List all movies played in landmark or music box

List all movies played in Landmark or Music Box. Output only titles and eliminate duplicates. List all stars born after 1960. Order them by their birthdate in ascending order. Output their first names, last names, and birthdates.

  Create a schema with appropriate privileges

Create separate physical structures for the new schema as per OFA guidelines - Create a Schema with appropriate privileges

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