Exam 2: Data Models

In the ____ model,each parent can have many children,but each child has only one parent.

What do business rules require to be effective?

Each row in the relational table is known as an entity instance or entity occurrence in the ER model.

Which of the following is a basic building block of all data models?

A(n)____________________ is a collection of similar objects with a shared structure and behavior.

Which of the following is true of business rules?

Data modeling starts with a very complex representation,and as knowledge of the problem is gained,the model is simplified.

In the ____ model,the user perceives the database as a collection of records in 1:M relationships,where each record can have more than one parent.

In object-oriented terms,a(n)____________________ defines an object's behavior.

In an SQL-based relational database,rows in different tables are related based on common values in common attributes.