The above table is a portion of data in a relational model. How many records are in the above portion of data there? How many data fields are? How many data items are there? Question 3 (10 points): For interpreting the data items in the table of question 2, there is a need for another piece of data. What keyword is usually used to refer to "this data about data"? Question 4 (20 points): List the name of five different types of data models in database system design. Question 5 (10 points): (A) What is an integrated database system? (B) What are two advantages of integrated database systems. Question 6 (10 points): Name four services that a DBMS offers. Question 7 (10 points): What is an entity? Question 8 (10 points): In a table of a relational model, what parts represents an entity