Data modeling Flashcards
Which of the following statements is/are true about data modeling? (Select all that apply.)
a. Data modeling is the process of defining how data is stored.
Your Answer: Correct
Correct!
Defining how data is stored is one function of data modeling. Data modeling helps you use your data effectively to meet information needs.
b. Data modeling is the process of defining the relationships that exist among different entities in your data.
Your Answer: Correct
Correct!
Defining the relationships that exist among different entities in your data is one function of data modeling. Data modeling enables you to document data requirements for applications and identify errors in development plans before any code is written.
Which of the following are benefits of a proper data model? (Select all that apply.)
a. A proper data model makes it easier to manage your data.
b. A proper data model makes queries more efficient.
c. A proper data model uses less memory and CPU.
d. A proper data model reduces costs.
Which of the following is a benefit of the document model?
different schemas in same collection
