Răspunsuri secțiuni 1-10 la baze de date Oracle

Sectiune 1

1. There is a big increase in demand for Information Technology professionals in today's market. True or False? true

2. What are the major content areas covered in the Oracle Academy? Data Modeling, SQL, and PL/SQL

1. Which of the following are examples of data vs. information? Both A and B

2. Consider an example where an Oracle database works "behind the scenes" for common internet activity. Which of the following best describes a database transaction? A person searching an airline website to find all available fares for a flight

3. What are the results of having all your data in one central location? (Choose two) Improved performance Easier access to data

4. How do you turn "data" into "information"? By querying it or accessing it

1. Data Modeling is the last stage in the development of a database. True or False? false

2. Oracle was one of the first relational database systems available commercially? True or False? true

3. Which of the following is the correct order for the Database Development Process? Strategy, Analysis, Design, Build

1. Are all of the following examples of how changes in computing have affected day-to-day activities? Yes or No? In the past you used to use the phone system to call directory assistance to get a phone number. Today you can use your PC to look up a phone number online.In the past you used to have to go to the shoe store to buy shoes. Today you can use your PC to order shoes online. In the past you had to use your PC to send a person an email message. Today you can use your phone to send a text message. yes

2. The overall mission of the Oracle Corporation is to use the internet and fast servers to meet the needs of organizations by only storing data. false

3. Personal computers (PCs) have been in existence since 1950. True or False? false

4. Which of the following are examples of e-businesses that use database software? Online clothing store Online book store Online personal shopping service

5. Users would use which of the following software to access essential business applications? (Choose three) GUI Interface Internet Browser Operating System

6. In the grid computing model, resources are pooled together for efficiency. True or False? true

Sectiune 2

1. Many reasons exist for creting a conceptual model. Choose three appropriate reasons from the options below. They model functional and informational needs They capture current and future data needs. They accurately describe what a physical model will contain

2. A customized hat is an example of the conceptual model or the physical model? Physical Model

3. Which of the following are reasons we create conceptual models? All of the above

4. An Entity Relationship Diagram is an example of a Physical Model. True or False? false

1. Some of the following could be attributes of an ENTITY called PERSON. Select the incorrect attributes for PERSON. (Choose Two) Freddy Wilson Priya Hansenna

2. An entity may have which of the following? Instances

3. In the following statements, find two examples of ENTITY: Instance. (Choose Two) DAIRY PRODUCT: milk BOOK: Biography of Mahatma Gandhi

4. Which of the following statements about attributes are true? (Choose Two) They describe, qualify, quantify, classify, or specify an entity. They have a data type such as a number or character string.

5. The word "Volatile" means.... Changing constantly; unstable

6. Which of the following entities most likely contains invalid attributes? Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed

7. All of the following would be instances of the entity PERSON except which? Male