Top 88 Question Asked in Part I of MIS 150 EXAM #1 (Chapter 1-4, Appendix C) Exams questions gathered from old tests dating back to Fall 2000

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1 Top 88 Question Asked in Part I of MIS 150 EXAM #1 (Chapter 1-4, Appendix C) Exams questions gathered from old tests dating back to Fall Name one data model that emphasizes the concept of reusable modules: Object Oriented Model, Pg Name the data model that is most suitable for the purpose of processing large volume social security checks at the end of every month: Hierarchical Model, Pg Name the data model that is most suitable to meet the ad hoc report requirement of top management. Relational Model, Pg Name the most important difference between a file-based system and a database system: File Based System are data dependent and Database is independent. File Based System has a great amount of data redundancy. 5. Name the view which deals with the physical presentation of data in the three-level ANSI-SPARC architecture for data base design: Internal View 6. Name the language which retrieves data from a database in Structured Query Language: Data Manipulation Language (DML) 7. Name the most important usage for entity-relationship data model: Documentation 8. Name the data model which does not allow many-to- many-relationship between two relations: Hierarchical Data Model 9. Name the integrity which relates primary key and foreign key: Referential integrity 10. Name the data dictionary which is most suitable for a group of heterogeneous database management systems: Information Resource Dictionary System, Pg Name the function of a data base management system that will check the business rules for data entry: Integrity 12. Name the data model that uses the concepts of class and subclass: Object-Oriented 13. Name the approach that does not have the advantage of data abstraction: File-Based Approach

2 14. Name the purpose of a secondary key: Providing basis for a subset 15. Name the language that alters table for Structure Query Language: Data-Definition Language (DDL) 16. Name the data model that is most suitable for documentation: Entity Relationship 17. Name the condition for intersection operation in relation algebra: Union Compatible 18. Name the view that deal with data encryption in the three-level ANSI-SPARC architecture: Internal View 19. Name the data model that uses nodes to represent records for the checking account customers of a bank: Hierarchical Model 20. Name the relational integrity that will no allow null value for the primary key: Entity Integrity 21. Name the subsystem or component of a database management system that controls the access to the database: Concurrency Control Services (50), Integration (27) 22. Name one limitation of database management systems: Complexity, Size, Cost of DBMS s, Additional Hardware Costs, Cost of Conversion, Performance, Higher Impact of a Failure (Vulnerability) (29-30) 23. Name the most significant limitation of a file processing system: Redundancy, Duplication (12-14) 24. Name one non-procedure language of a database management system: Structured Query Language (SQL) 25. Name the approach that uses data normalization and entity-relationship diagram in a database requirement analysis phase: Data Centered Approach 26. Name the object-based data model that is used to document a database: Entity-Relationship 27. Name the key that includes every attributes of a relation: Superkey

3 28. Name the testing strategy that follows individual processes: Stress Thread 29. Name the data model that does not allow repeating groups: Relational 30. Name the integrity that requires a foreign key in a relation and a primary key in another relation: Reference 31. Name the function of a database management system that checks the users password and access rights: Security System 32. Name the constraint that is defined by the organization: Enterprise Constraint 33. Describe the data abstraction using the relationship between data and program: Data and Program Independent 34. Name the command of SQL that will allow an authorized end user to change a foreign key: Alter Table, Add Constraints 35. Name the view for defining file organization of building a database in three levels ANSI SPARC architecture. Internal View 36. Name the data model that is most suitable for ad hoc reports: Relation Data Model 37. Name the usage of an entity-relationship model: Logical Database Design and Documentation 38. Name the system catalog that is not suitable for controlling the database integrity: Passive & Standalone (62) 39. Name the file organization that is not suitable to support ad hoc reporting and month end statement generating for a bank: Heap File Organization 40. Name the terminology of the relational model that is used to indicate the total number of columns in a relation: Degree 41. Name the integrity that indicates the relationship between a primary key in one relation and its associated foreign key in another relation: Referential Integrity

4 42. Name the relation algebra operation that generates one or more tuples according to one or more conditions within two relations: Join 43. Name the virtual relation that is the result of one or more relational operations operating on the base relations: View 44. Sate the meaning of the terminology null in the relational data model: No Value Entered 45. Name the file organization that is most suitable for different types of record processing and without any overflow problems: B+ Tree 46. Name the terminology to represent the number of tuples in a relation: Cardinality 47. Name the service of a DBMS that will not allow two users updating a file at the same time: Concurrency Control Services (system) 48. Name the data model that uses the parent and child to describe the relationship between two associated tables: Hierarchical Model 49. Name the database language that is used to retrieve information from a database: Data Manipulation Language 50. Name the major characteristics of the database approach that is different from the file based approach: Program/Data Independence (i.e. Data Abstraction) 51. What is the definition of an entity constraint? Primary key cannot be null 52. What is another name for Inter? Referential 53. Name a structured design approach using procedures, techniques, tools, and documentation aids: Design Methodology 53. Name a database design for constructing an information model, independent from all physical consideration for an enterprise: Conceptual Database Design 54. Name the database design for building an organization database based on a specific data model: Logical Database Design

5 55. Name the database design implementing a database using specific data storage structure(s) and access methods: Physical Database Design 56. What is another name for domain? Enterprise 57. Name the file organization that retrieves information in no order (first come first serve): Heap 58. Name the file organization that can do payroll: Indexed Sequential 59. Name the file organization that is good for Ad hoc reports: Direct 60. Name the file organization That IBM invented that is good for monthly billing: B+ Tree 61. Name the key that has a marketing/research purpose: Secondary Key 62. Name the key that will produce one unique record: Primary Key 63. Name the key that will produce a group of records: Secondary Key 64. Name the term that consistent with constraints: Integrity 65. Name the five types of integrity and give examples: Entity, Referential, Existence, Domain, Enterprise 66. Name the database design that determines the security protection for the data and information: Physical 67. Name one method that could be used for security control in physical database design: Assign Permission 68. Name the documentation method that is used in the data centered approach for the information requirements analysis: Entity Relationship Model

6 69. Name the word that is used to indicate the overlapping relationship between subclasses in an enhanced entity-relationship model: AND 70. Name the design for building an organization database based on a specific data model: Logical Design 71. Name the component or stage in database design that is independent from hardware and software: Logical Database Design 72. Explain the most important reason of a B+ tree to be qualified as the model, but independent of a particular DBMS: Logical Design 73. Name the most efficient index sequential method: B+ Tree 74. Name the file organization which is most suitable to be used for monthly payroll processing and random payroll inquiry: B+ Tree 75. Name the file organization that is most suitable for processing month end account statements and customer inquiry of a bank: Indexed Sequential 76. Name the file organization that is most suitable for information inquiry by management: Random/Direct 77. Name the file organization which is suitable to be used only for credit card billing inquiry: Direct 78. Name the constraint that involves two relation: Inter/Referential 79. Name the hashing method in a direct file organization that will generate lease synonyms: Chained Overflow 80. Name the efficient measurement for an online real-time query system: Throughout 81. Change internal view will not affect conceptual view: Physical 82. Name the usage of entity relationship modal? Documentation

7 83. What is state in the object oriented modal? Attribute 84. Name 3 constraints in the conceptual view: Physical, Referential, Domain/Enterprise 85. Name the components of 3-level ANSI SPARC Architecture: External, Internal, Conceptual 86. Name all the data models in object based data model: Entity-Relational Modal Object Oriented Modal 87. Name the set type that is suitable for owner of car and car: Mandatory 88. What is the definition of File Based Systems? Program and Data are Dependent

8 Roles of Personnel 1. Data Administrators (DA) roles include: 1) Responsible for the management of the data resource including: 2) Database planning. 3) Development and maintenance of standards. 4) Polices and procedures 5) Conceptual/logical database design. 6) Consults with and advice senior managers. 7) Ensuring that the direction of database development will ultimately support corporate objectives. 2. Database Administrators (DBA) roles include: 1) Physical realization of the database, including database design and implementation. 2) Security and integrity control. 3) Maintenance of the operational system. 4) Ensuring satisfactory performance of the application for users. 5) More technical oriented requiring detailed knowledge of the target DBMS and the system environment. 3. Database Design roles include: Logical: i. Identifying the data (entities and attributes) ii. Relationship between data. iii. Constraints on the data to be stored. iv. Must have through and complete understanding of the organization s data and any constraints (Business rules). Physical (involves how the logical database design is to be physically realized): 1. Mapping the logical database design into set of tables and integrity constraints. 2. Selecting specific storage structures and access methods for data to achieve good performance. 3. Designing any security measures required on the data. 4. Application Developers: Write an application program that provides required functionality for the end-user. 5. End-Users: Naïve users: Unaware of the DBMS. 1. Access the database through a specially written application. 2. Invoke database operations by entering simple commands. Example: Checkout clerk. Sophisticated user: Familiar with structure and facilities of the Database. 1. May use high level query language such as SQL. 2. May write application programs for their won.

9 Part II of MIS 150 EXAM #1 (Chapter 1-4, Appendix C) 1. (14 Points) Single underline a primary key, double underline every foreign key, and circle (highlight) every candidate key for the following relations. Customer (cust_id, l_name, f_name, city, driver_id, balance) Videotape (video_id, acquire_)date_date, movie_id, store_id) Movie Store Movie (movie_id, title, category, length, rating) Rental (cust_id, video_id, rent_date, due_date, return_date, cost, emp_id) Customer Videotape Store (store_id, city, phone) Employee (emp_id, ssno, l_name, f_name, title, pay_rate, store_id) 2. Given the above 6 relations: (a) (14 Points) Use relational algebra to list cust_id, f_name, l_name, and city of those customers who have never rented a video and live in Sacramento. Customer LEFTOUTERJOIN Rental WHERE Customer.cust_id = Rental.cust_id GIVING T1 SELECT T1 WHERE video_id = null AND city = Sacramento GIVING T2 PROJECT T2 OVER (cust_id, f_name, l_name, city) GIVING T3 (b) (14 Points) Use relational algebra t5o list video_id, title, category, and length of those videos having a rating of PG. Videotape JOIN Movie WHERE Videotape.movie_id = Movie.movie_id GIVING T1 SELECT T1 WHERE rating = PG GIVING T2 PROJECT T2 OVER (video_id, title, category, length) (c) (14 Points) Use relational algebra to list the employee information of those employees who work for a store located in Davis. SELECT Store WHERE city = Davis GIVING T1 T1 JOIN Employee WHERE T1.store_id = employee.store_id GIVING T2 PROJECT T2 OVER (emp_id, ssno, f_name, l_name, title, pay_rate, store_id) GIVING T3

10 (d) (14 Points) Use relational algebra to list video_id and title of those videos that have been rented by cust_id = 1111 after 10/8/03. SELECT Rental WHERE cust_id = 1111 AND rent_date > 10/8/03 GIVING T1 T1 JOIN Videotape WHERE T1.video_id = videotape.video_id GIVING T2 T2 JOIN Movie WHERE T2.movie_id = movie.movie_id GIVING T3 PROJECT T3 OVER (cust_id, rent_date, video_id, title) GIVING T4 13. (10 Points) Use the following set of key values to construct a B+ tree index, assuming maximum 4 pointers per node. (51, 24, 3, 17, 18, 2, 14, 27, 5, 28, 30, 34)

11 1. (14 Points) Single underline a primary key, double underline every foreign key, and circle (highlight) every candidate key for the following relations. Student (student#, sname, major, birthdate, socialsecurity#) Course (course#, cname, department#) Enroll (student#, course#, semesterdate, grade) ========= ========= Book_adoption (course#, semesterdate, book_isbn) ========= =========== Book (book_isbn, booktitle, publisher#, author) Department (department#, chair, room, departmentname) Publisher (publisher#, publishername, address) 2. Given the above 7 relations where semesterdate contains information such as spring99: (a) (14 Points) Use relational algebra to list the booktitle and its author where the book is published by a publisher located in the United States. Book JOIN publisher WHERE book.publisher# = publisher.publisher# GIVING T1 SELECT T1 WHERE country = United States GIVING T2 PROJECT T2 OVER (booktitle, author) GIVING T3 (b) (14 Points) Use relational algebra to list every student who is currently not taking any course. The list should include all the student information (student#, sname, major, birthdate, socialsecurity#). Student LEFTOUTERJOIN enroll WHERE student.studetn# = enroll.student# GIVING T1 SELECT T1 WHERE course# = Null GIVING T2 PROJECT T2 OVER (student#, sname, major, birthdate, socialsecurity#) GIVING T3

8) A top-to-bottom relationship among the items in a database is established by a

8) A top-to-bottom relationship among the items in a database is established by a MULTIPLE CHOICE QUESTIONS IN DBMS (unit-1 to unit-4) 1) ER model is used in phase a) conceptual database b) schema refinement c) physical refinement d) applications and security 2) The ER model is relevant