STS 2010 Lecture 2: Ptolemaic Astronomy

Which of the following best illustrates the relationship between entities and attributes?

1. the entity CUSTOMER with the attribute PRODUCT
2. the entity CUSTOMER with the attribute PURCHASE
3. the entity PRODUCT with the attribute PURCHASE
4. the entity product with the attribute CUSTOMER

Which of the following has a valid relationship between the entity and attributes?

1.      The entity vehicle with an attribute fuel_require

2.      The entity patient with an attribute doctor

3.       The entity vehicle with an attribute driver

4.      The entity student with an attribute course

Describe the string class with respect to C++ with an example.