Relational Database | Chapter 2 | Full Solution | Database
Database Related Questions
- Discuss the importance of data modeling.
- What is a business rule, and what is its purpose in data modeling
- How do you translate business rules into data model components?
- What languages emerged to standardize the basic network data model, and why was such standardization important to users and designers?
- Describe the basic features of the relational data model and discuss their importance to the end user and the designer.*****
- Explain how the entity relationship (ER) model helped produce a more structured relational database design environment.
- Use the scenario described by "A customer can make many payments, but each payment is made by only one customer" as the basis for an entity relationship diagram (ERD) representation.
- Why is an object said to have greater semantic content than an entity?
- What is the difference between an object and a class in the object-oriented data model (OODM)?
- How would you model Question 7 with an OODM?
- What is an ERDM, and what role does it play in the modern (production) database environment?
- In terms of data and structural independence, compare file system data management with the five data models discussed in this chapter.
- What is a relationship, and what three types of relationships exist?
- Give an example of each of the three types of relationships.****
- What is a table, and what role does it play in the relational model?
- What is a relational diagram? Give an example.
- What is logical independence?
- What is physical independence?
- What is connectivity? (Use a Crow's Foot ERD to illustrate connectivity.)
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