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Quiz No.1

Dear Students,

 

Quiz # 1 will start from Tuesday, 16th Jun, 2015 and will remain open for two days the last day will be Wednesday, 17th Jun, 2015The lectures included in this quiz will be from Lecture # 1 to Lecture # 18.

 

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Quiz no 1:
Recursive relationship is also called______
• Ternary
• Primary
• Secondary
Quiz no 2:
The Entity Relation Model models
• Entities, Relationships and Processes

Entities and Relationships

Relationships
Entities


Quiz no3:
Controlling redundancy in a database management system DOES NOT help to
avoid duplication
avoid unnecessary wastage of storage space
avoid unauthorised access to data
avoid inconsistency among data


Quiz no 4:
Binary relationships are those, which are established between
One entity type
Two entity type
Three entity type
Unlimited entities


Quiz no 5:
Which levels are mostly used for Detailed DFD?
Level-0, Level-1
Level-1, Level-2
Level-2, Level-3
Level-3, Level-4

Quiz no6:

__________ is an example of metadata
Ali

Address
Person
Student

Quiz no 7:
Which of the following provides us the facility to add properties of one entity to another entity automatically?
• Abstraction
• Encapsulation
• Inheritance
• Dependencies

Quiz No8:
Data about data is database
True
False

Quiz no 9:

The database management system (DBMS) is used to
Store the data
Access the data
Manage its users
All of above

Quiz no10:
Entities enrolled in a relationship are called
• Roles
• Participants
• Instances
• Symbols

current quiz...


Quiz Start Time: 11:37 PM
Time Left 89
sec(s)
Question # 1 of 10 ( Start time: 11:37:39 PM ) Total Marks: 1
Which of the following provides us the facility to add properties of one entity to another entity automatically?
Select correct option:
Abstraction
Encapsulation
Inheritance
Dependencies

Quiz Start Time: 11:37 PM
Time Left 88
sec(s)
Question # 2 of 10 ( Start time: 11:38:04 PM ) Total Marks: 1
in “many to many relationship” one instance of first entity can be mapped with many instances of second entity
Select correct option:
true
false

Quiz Start Time: 11:37 PM
Time Left 88
sec(s)
Question # 3 of 10 ( Start time: 11:39:24 PM ) Total Marks: 1
Which of the following is an advantage of using the Traditional File Organization?
Select correct option:
Time consuming
Data security
Simplicity
Efficiency

Quiz Start Time: 11:37 PM
Time Left 88
sec(s)
Question # 4 of 10 ( Start time: 11:40:30 PM ) Total Marks: 1
A candidate key that does not have a null value and is selected to uniquely identify all other attribute values in any given row is called a ____.
Select correct option:
superkey
candidate key
primary key
secondary key

Quiz Start Time: 11:37 PM
Time Left 88
sec(s)
Question # 5 of 10 ( Start time: 11:41:52 PM ) Total Marks: 1
Making a change to the conceptual schema of a database but not affecting the existing external schemas is an example of
Select correct option:
Physical data independence
Logical data independence
Functional dependency
Concurrency control

Quiz Start Time: 11:37 PM
Time Left 88
sec(s)
Question # 6 of 10 ( Start time: 11:43:20 PM ) Total Marks: 1
A table can be logically connected to another table by defining a ____.
Select correct option:
hyperlink
common attribute
primary key
superkey

Quiz Start Time: 11:37 PM
Time Left 88
sec(s)
Question # 7 of 10 ( Start time: 11:44:20 PM ) Total Marks: 1
In Cross Reference Matrix attributes are specified on _______
Select correct option:
X axis
Y axis
Z axis
None of the above


Quiz Start Time: 11:37 PM
Time Left 89
sec(s)
Question # 8 of 10 ( Start time: 11:45:23 PM ) Total Marks: 1
In “One to Many” cardinality one instance of a relation is mapped with
Select correct option:
many instances of second entity type
One instance of second entity type
Primary key of 2 relations
none of above

Quiz Start Time: 11:37 PM
Time Left 89
sec(s)
Question # 9 of 10 ( Start time: 11:46:39 PM ) Total Marks: 1
Entities enrolled in a relationship are called
Select correct option:
Roles
Participants
Instances
Symbols


Quiz Start Time: 11:37 PM
Time Left 88
sec(s)
Question # 10 of 10 ( Start time: 11:47:18 PM ) Total Marks: 1
“Select” and “project” are the examples of
Select correct option:
Unary operations
Binary operations
Ternary operations
All of above


Quiz Start Time: 11:48 PM
Time Left 88
sec(s)
Question # 1 of 10 ( Start time: 11:48:07 PM ) Total Marks: 1
Database Application is a program which is used for performing certain operations such as
Select correct option:
Insertion of data
Extraction of data
Updating the data
All of above


Quiz Start Time: 11:48 PM
Time Left 89
sec(s)
Question # 2 of 10 ( Start time: 11:48:25 PM ) Total Marks: 1
Which of the following might be represented with a single-valued attribute?
Select correct option:
person's phone number
car's color
employee's educational background
computer's processor speed


Quiz Start Time: 11:48 PM
Time Left 88
sec(s)
Question # 3 of 10 ( Start time: 11:49:16 PM ) Total Marks: 1
A collection of concepts that can be used to describe the structure of a database
Select correct option:
Database
DBMS
Data model
Data

Quiz Start Time: 11:48 PM
Time Left 88
sec(s)
Question # 4 of 10 ( Start time: 11:50:12 PM ) Total Marks: 1
Unary operations involves
Select correct option:
Only one relation
Only two relations
More than two relations
Not more than five relations

Quiz Start Time: 11:48 PM
Time Left 88
sec(s)
Question # 5 of 10 ( Start time: 11:51:05 PM ) Total Marks: 1
Which of the following constraint is included in the definition of the table?
Select correct option:
Default value
Foreign Key
Null
Domain


Quiz Start Time: 11:48 PM
Time Left 88
sec(s)
Question # 6 of 10 ( Start time: 11:51:42 PM ) Total Marks: 1
Which of the following is INCORRECT about naming entities?
Select correct option:
Singular nouns are used
Write in capitals
Organization specific names can be used
Always use abbreviations as they are convenient

Quiz Start Time: 11:48 PM
Time Left 88
sec(s)
Question # 7 of 10 ( Start time: 11:52:40 PM ) Total Marks: 1
Which of the following is NOT a component of a DFD?
Select correct option:
Dataflow
Datastore
External entities
Relationship between external entities

Quiz Start Time: 11:48 PM
Time Left 88
sec(s)
Question # 8 of 10 ( Start time: 11:53:38 PM ) Total Marks: 1
Select the most appropriate statement. Which of the following data model is used to design logical database design?
Select correct option:
Relational
Hierarchal
Object oriented
Any model can be used


Quiz Start Time: 11:48 PM
Time Left 88
sec(s)
Question # 9 of 10 ( Start time: 11:54:07 PM ) Total Marks: 1
A ____ entity has a primary key that is partially or totally derived from the parent entity in the relationship.
Select correct option:
strong
Weak
Business
Relationship

Quiz Start Time: 11:48 PM
Time Left 88
sec(s)
Question # 10 of 10 ( Start time: 11:55:14 PM ) Total Marks: 1
ERD is a ____ data model.
Select correct option:
Graphical
Textual
Semantic
Syntax

Quiz Start Time: 11:57 PM
Time Left 88
sec(s)
Question # 1 of 10 ( Start time: 11:57:27 PM ) Total Marks: 1
In a three-level DBMS architecture, the ______ level interacts directly with the users.
Select correct option:
external
conceptual
internal
physical


Quiz Start Time: 11:57 PM
Time Left 88
sec(s)
Question # 2 of 10 ( Start time: 11:58:43 PM ) Total Marks: 1
A software package designed to store and manage databases
Select correct option:
Database
DBMS
Data model
Data


Quiz Start Time: 11:57 PM
Time Left 89
sec(s)
Question # 3 of 10 ( Start time: 11:59:03 PM ) Total Marks: 1
Incase of Context-level Diagram, the system is represented by
Select correct option:
One process atleast
Two processes atleast
One process only
Any number of processes


Quiz Start Time: 11:57 PM
Time Left 88
sec(s)
Question # 4 of 10 ( Start time: 12:00:21 AM ) Total Marks: 1
User rights information is stored in
Select correct option:
Physical database
Catalog
Logical database
Buffer

Quiz Start Time: 11:57 PM
Time Left 88
sec(s)
Question # 5 of 10 ( Start time: 12:01:25 AM ) Total Marks: 1
Which of the following might be represented with a multivalued attribute?
Select correct option:
person's name
class location
bank account balance
book title

Quiz Start Time: 11:57 PM
Time Left 88
sec(s)
Question # 6 of 10 ( Start time: 12:02:00 AM ) Total Marks: 1
in “One to One Relationship” One instance of first entity type is mapped with two instances of second entity type
Select correct option:
true
false

Quiz Start Time: 11:57 PM
Time Left 88
sec(s)
Question # 7 of 10 ( Start time: 12:02:15 AM ) Total Marks: 1
___________ is most difficult to change when a database is created
Select correct option:
Extension
Intention
Expansion
Indentation

Quiz Start Time: 11:57 PM
Time Left 87
sec(s)
Question # 8 of 10 ( Start time: 12:03:02 AM ) Total Marks: 1
Which of the following is true regarding foreign keys?
Select correct option:
There can only be one foreign key in a relation
There can be as many foreign keys as needed
Foreign key is not a super key
Each table in database must have a foreign key


Quiz Start Time: 11:57 PM
Time Left 88
sec(s)
Question # 9 of 10 ( Start time: 12:04:09 AM ) Total Marks: 1
Which of the following constraint is included in the definition of the table?
Select correct option:
Default value
Foreign Key
Null
Domain


Quiz Start Time: 11:57 PM
Time Left 88
sec(s)
Question # 10 of 10 ( Start time: 12:04:28 AM ) Total Marks: 1
Which of the following provides us the facility to add properties of one entity to another entity automatically?
Select correct option:
Abstraction
Encapsulation
Inheritance
Dependencies

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