Exam 18: Object Database Management Systems
Exam 1: Introduction to Database Management76 Questions
Exam 2: Introduction to Database Development76 Questions
Exam 3: The Relational Data Model75 Questions
Exam 4: Query Formulation With SQL75 Questions
Exam 5: Understanding Entity Relations76 Questions
Exam 6: Developing Data Models for Business Databases75 Questions
Exam 7: Normalization of Relational Tables76 Questions
Exam 8: Physical Database Design76 Questions
Exam 9: Advanced Query Formulation With SQL74 Questions
Exam 10: Application Development With Views75 Questions
Exam 11: Stored Procedures and Triggers76 Questions
Exam 12: View Design and Integration76 Questions
Exam 14: Data and Database Administration76 Questions
Exam 15: Transaction Management75 Questions
Exam 16: Data Warehouse Technology and Management78 Questions
Exam 17: Client-Server Processing and Distributed Databases76 Questions
Exam 18: Object Database Management Systems83 Questions
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There is a request to insert a row into table Tc with values 10,20,30 respectively for ax,bp,cm.Which of the following will take place?
(Multiple Choice)
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There is a request to insert a row in Tb with values 4,3 respectively for ax and bp.Which of the following will take place?
(Multiple Choice)
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CLASS Employee {
//Variables
String LastName;
String FirstName;
Real HourlyRate;
Integer HoursWorked;
Date HireDate;
String Job;
//Methods
Real Salary();
String GetLastName();
String GetFirstName();
String GetJob();}
-If the type of the data HoursWorked is changed from integer to real,the following will need to be changed:
(Multiple Choice)
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For object-oriented DBMSs,the two languages that are the counterpart for SQL in relational DBMSs are ________________________ and __________________________.
(Essay)
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When an object receives a request to execute a method,if the object's class does not contain that method,the request is forwarded to the parent class for execution.
(True/False)
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In addition to user-defined types,object relational databases support other object features such as subtable families,and array and row data types.
(True/False)
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In SQL:1999,the keyword ________________ in a method definition indicates that the child method being defined overrides the definition in the parent type.
(Short Answer)
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One of the fundamental principles of object-oriented computing is _________________,which means that an object can only be accessed through its interface.
(Short Answer)
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Which of the following applications is supported by a relational DBMS?
(Multiple Choice)
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Class reusability and data independence are two of the benefits of encapsulation.
(True/False)
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An object-oriented DBMS is a good choice for traditional business applications that require ad hoc query capabilities,query optimization,and efficient transaction support.
(True/False)
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In both the large object architecture and the specialized media server architecture,SQL queries are used to retrieve and display complex data.
(True/False)
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The object relational DBMS architecture contains a(n)____________________,which includes a parser to decompose references to expressions containing user-defined types and functions,and an optimizer to optimize these references.
(Short Answer)
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The need to integrate complex data,such as images,audio and video,with simple data,such as dates and numbers,is the driving force behind object database technology.
(True/False)
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Which of the following statements does not apply to today's object relational DBMS?
(Multiple Choice)
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There is only one row with value ax = 100 in Ta.If there is a request to delete that row,which of the following is true?
(Multiple Choice)
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An implicit method of a user-defined type used to create an empty instance of that type is called a(n)_________________ method.
(Short Answer)
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In the object relational approach,complex data such as video data are not processed through commands of the database language.
(True/False)
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