• Activity
  • Study Help
    • Study Help
    • Homework Help
    • Solve Solutions
    • Articles
    • Write For Us!
  • Terms and Conditions
  • Privacy Policy

    Cart

    No products in the cart.

    Sign in Sign up

    Cart

    No products in the cart.


    • Activity
    • Study Help
      • Study Help
      • Homework Help
      • Solve Solutions
      • Articles
      • Write For Us!
    • Terms and Conditions
    • Privacy Policy
    Sign in Sign up

    Category: Data Modeling and Database Design, 2nd Edition by Dr. Narayan S. Umanath, Richard Scamell 1001

    Data Modeling and Database Design, 2nd Edition by Dr. Narayan S. Umanath, Richard Scamell 1001
    ISBN-10: 1285085256
    ISBN-13: 9781285085258

    What is the result of an attempt to add, subtract, multiply, or divide two number fields, one of which contains a null value?

    QUESTION: What is the result of an attempt to add, subtract, multiply, or divide two number fields, one of which contains a null value?

    Avatar
    Aehtisaam Saifi September 11, 2018
    0 Comments

    Which comparison operators can be used when searching for null values? Which comparison operators cannot be used when searching for null values?

    QUESTION: Which comparison operators can be used when searching for null values? Which comparison operators cannot be used when searching for null values? What is…

    Avatar
    Aehtisaam Saifi September 11, 2018
    0 Comments

    What is the difference between a character field that contains a null value and a character field that contains a single blank space?

    QUESTION: What is the difference between a character field that contains a null value and a character field that contains a single blank space?

    Avatar
    Aehtisaam Saifi September 9, 2018
    0 Comments

    Why does the relation created as result of a Projection operation on a relation that includes the primary key not contain fewer tuples than those in the source relation?

    QUESTION: Why does the relation create a result of a Projection operation on a relation that includes the primary key not contain fewer tuples than…

    Avatar
    Aehtisaam Saifi September 9, 2018
    0 Comments

    With which of the four types of constraints in Exercise 4 is a requirement that an attribute not contain a null value associated?

    QUESTION: With which of the four types of constraints in Exercise 4 is a requirement that an attribute did not contain a null value associated?

    Avatar
    Aehtisaam Saifi September 9, 2018
    0 Comments

    What are the minimum elements that must be included in the CREATE TABLE statement in defining the structure of a table?

    QUESTION: What are the minimum elements that must be included in the CREATE TABLE statement in defining the structure of a table?

    Avatar
    Aehtisaam Saifi September 9, 2018
    0 Comments

    What are the undesirable functional dependencies in the relation instance of the STUCLASS relation schema shown in Exercise 6?

    QUESTION: What are the undesirable functional dependencies in the relation instance of the STUCLASS relation schema shown in Exercise 6?

    Avatar
    Aehtisaam Saifi September 9, 2018
    0 Comments

    Figures 5.4, 5.7, and 5.39 each show the decomposition of a ternary relationship. Explain why the entity types SCHEDULE and PRESCRIPTION in Figures 5.4

    QUESTION: Figures 5.4, 5.7, and 5.39 each show the decomposition of a ternary relationship. Explain why the entity types SCHEDULE and PRESCRIPTION in Figures 5.4…

    Avatar
    Aehtisaam Saifi September 8, 2018
    0 Comments

    Why can total participation of an entity type in a relationship type also be referred to as existence dependency of that entity type in that relationship type?

    QUESTION: Why can total participation of an entity type in a relationship type also be referred to as existence dependency of that entity type in…

    Avatar
    Aehtisaam Saifi August 17, 2018
    0 Comments

    Give an example of three entity types and accompanying attributes that might be associated with a database for a car rental agency?

    QUESTION: Give an example of three entity types and accompanying attributes that might be associated with a database for a car rental agency?

    Avatar
    Aehtisaam Saifi August 17, 2018
    0 Comments
    Load More

    Groups

    There are no groups to display.
    Secure Payment
    Extreme E-Learning Community
    © 2021 - AnsTutors.Com All Rights Reserved with AnsTutor.Com & Educational Partners