Object Oriented Database MCQs with Explanations

Unary and Binary is the correct answer to “ODL supports which of the following types of association relationships”. This question is standard in competitive examination syllabi for Object Oriented Database.

The set of all instances of a class within a database is the correct answer to “An extent is which of the following”. This question is standard in competitive examination syllabi for Object Oriented Database.

ABC123 is the correct answer to “Identify the class name for the following code: ABC123 course();”. This question is standard in competitive examination syllabi for Object Oriented Database.

All of the above is the correct answer to “Using ODL, you can define which of the following”. This question is standard in competitive examination syllabi for Object Oriented Database.

Relationship is the correct answer to “The keyword "inverse" is used in which of the following”. This question is standard in competitive examination syllabi for Object Oriented Database.

All of the above. is the correct answer to “The object definition language (ODL) is which of the following”. This question is standard in competitive examination syllabi for Object Oriented Database.

All of the above. is the correct answer to “An atomic literal is which of the following”. This question is standard in competitive examination syllabi for Object Oriented Database.

They have the ability to store complex data types on the Web. is the correct answer to “Which of the following is true concerning an ODBMS”. This question is standard in competitive examination syllabi for Object Oriented Database.

To define a range for an attribute. is the correct answer to “The reserved word enum is used for which of the following”. This question is standard in competitive examination syllabi for Object Oriented Database.

Bag is the correct answer to “Which of the following is an unordered collection of elements that may contain duplicates”. This question is standard in competitive examination syllabi for Object Oriented Database.

Manager is a concrete class and a subclass. is the correct answer to “Which of the following is true concerning the following statement: class Manager extends Employee”. This question is standard in competitive examination syllabi for Object Oriented Database.

List is the correct answer to “Which of the following is an ordered collection of elements of the same type”. This question is standard in competitive examination syllabi for Object Oriented Database.

Both directions is the correct answer to “A relationship should be specified how in the ODL”. This question is standard in competitive examination syllabi for Object Oriented Database.

All of the above. is the correct answer to “Using OQL, you may do which of the following”. This question is standard in competitive examination syllabi for Object Oriented Database.

Similar to SQL and uses a select-from-where structure is the correct answer to “The Object Query Language is which of the following”. This question is standard in competitive examination syllabi for Object Oriented Database.

False is the correct answer to “ODL supports the abstract keyword for classes and operations.”. This question is standard in competitive examination syllabi for Object Oriented Database.

True is the correct answer to “The ODMG Object Model requires that a relationship be specified in both directions.”. This question is standard in competitive examination syllabi for Object Oriented Database.

True is the correct answer to “Before specifying a key for a class, you must specify its extent.”. This question is standard in competitive examination syllabi for Object Oriented Database.

False is the correct answer to “The Object Model supports different literal types, but does not support atomic literals, collection literals, and structured literals.”. This question is standard in competitive examination syllabi for Object Oriented Database.

True is the correct answer to “The ODMG Object Model supports only unary and binary relationships.”. This question is standard in competitive examination syllabi for Object Oriented Database.

True is the correct answer to “Literals do not have identifiers, and, therefore, cannot be individually referenced like objects.”. This question is standard in competitive examination syllabi for Object Oriented Database.

False is the correct answer to “A collection of literals or object types is called a bag.”. This question is standard in competitive examination syllabi for Object Oriented Database.

True is the correct answer to “An attribute's value is either a literal or an object identifier.”. This question is standard in competitive examination syllabi for Object Oriented Database.

False is the correct answer to “Database objects are almost always transient.”. This question is standard in competitive examination syllabi for Object Oriented Database.

True is the correct answer to “An attribute's value is always literal.”. This question is standard in competitive examination syllabi for Object Oriented Database.

True is the correct answer to “Specifying a key ensures that no two objects belonging to a class have the same value for the key attribute(s).”. This question is standard in competitive examination syllabi for Object Oriented Database.

True is the correct answer to “If you know all the possible values that an attribute can have, you can enumerate those values in ODL.”. This question is standard in competitive examination syllabi for Object Oriented Database.

False is the correct answer to “You may specify an object identifier with only one unique tag name.”. This question is standard in competitive examination syllabi for Object Oriented Database.

True is the correct answer to “In ODL, you specify an operation using parentheses after its name.”. This question is standard in competitive examination syllabi for Object Oriented Database.

False is the correct answer to “An ordered collection of elements of the same type are called sets.”. This question is standard in competitive examination syllabi for Object Oriented Database.