Question 2: Which type of dictionary requires commitment to a specific DBMS software? Question 3: In the three level architecture: (A) What is the name of interface between external level and logical level? (B) What is the name of interface between logical level and internal level? Question 4: Explain the relationship between external schemas and external views. Question 5: What is the point of connection between users and DBMS? Question 6: For having a good database design, should we have a permanent logical model or a logical model that is changed frequently? Question 7: In what language logical schemas are written? Question 8: Explain the logical data independence in the three level architecture. Question 9: Explain the physical data independence in the three level architecture. Question 10: Name two types of dictionaries for DBMS software. Question 11: Which one of the following items is not included in a DBMS catalog? (A) External schemas, logical schemas, internal schemas. (B) The source code of Data Base Management System software. (C) The mapping between logical model and internal model. (D) The mapping between external view and logical view. Question 12: Specify at which level of the three-level architecture the following requirements are addressed: (A) Different users can see data differently. (B) Users interact with the database without dealing with the complexities of the database storage structure. (C) The Database Administrator can change the logical model without affecting users' views of data. Question 13: The below items are the stages in a database system design. Arrange these items in the order that they should be completed: Choosing a DBMS Developing the physical mode Analyzing the user environment Implementing the physical model Performing tuning if needed Developing the logical model Developing a conceptual data model Evaluating the physical model