UML is stands for
Universal Modeling Language
Unified Modeling Language
United Modeling Language
Uni Modeling Language
Correct Answer :
B. Unified Modeling Language
Related Questions
A composite attribute is converted to individual attributes in which of the following normal form ?
first
Second
third
fourth
The syntax to select all column from the table is
select all from tablename
select * from tablename
select from tablename
none of these
As a side-effect of database update ,the system automatically executes a statement called
a view
a grant permission
a trigger
all of the above
By default a user who has been granted some form of authorization
is allowed to pass them to others
is not allowed to pass them to others
may be or may not be allowed to pass them to others
none
RAID
Redundant Arrays of Independent Disks
Redundant Arrays of Independent Drives
Redundant Arrays of Interconnected Drives
Redundant Arrays of Interconnected Disks
In which of the random-access method, stations do not sense the medium?
ALOHA
ETHERNET
CSMA/CA
CSMA/CD
A data dictionary contains:
i) The name of all fields in all files.
ii) The data type of all fields in all files.
iii) The width of all fields in all files.
only i)
only i) and ii)
only ii) and iii)
i) ii) iii)
In an object oriented model, one object can access data of another object by passing?
Instance variable
Variable
Message
Function
The output of the Data Definition Language is stored in the
view table
schema
metadata
all of the above.
Which one of the following is provided by a data dictionary ?
User data
Database structure data
Sorted data
Functional data
The privilege lists include
i) select
ii) insert
iii) update
iv) delete
only i)
only i) ii)
only i) ii) iii)
i) ii) iii) iv)
Which of the following is true statement ?
SQL permits attribute names to be repeated in the same relation.
a SQL query automatically eliminates duplicates.
a SQL query will not work if there are no indexes on the relations
None of these
The database environment has all of the following components except:
users.
separate files.
database.
database administrator.
Which of the following is also known as Offline storage ?
primary storage
secondary storage
tertiary storage
none of the above
Triggers are also called
active rules
passive rules
inferences
none of the above
Data Manipulation Language DML) is not to
Create information table in the Database
Insertion of new information into the Database
Deletion of information in the Database
Modification of information in the Database
QBE
Query By Execution
Query By Example
Query By Extraction
None of the above.
DECLARE is a(an)
executable statement.
declarative statement.
Ordered file
none of the above
What is ACID properties of Transactions?
Atomicity, Consistency, Isolation, Database
Atomicity, Consistency, Isolation, Durability
Atomicity, Consistency, Inconsistent, Durability
Automatically, Concurrency, Isolation, Durability
Encoding method which does not provide for synchronization
B8ZS
Manchester
RZ
NRZ-L
Electromagnetic spectrum included in radiowaves are
i) Super High Frequency (SHF)
ii) Very High Frequency (VHF)
iii) Ultra High Frequency (UHF)
iv) High Frequencies (HF)
i, ii and iii only
i, ii and iv only
ii, iii and iv only
i, iii and iv only
The degree of the table with 500 rows and 7 columns is
500
7
3500
none of these
View never contains derived columns.
True
False
Cant say
none
Generalization is a
top-down approach.
bottom-up approach.
left-right approach.
none of the above
Multivalued dependency is removed in
4 NF
3 NF
2 NF
1 NF
Which of the following operator preserves unmatched rows of the relations being joined?
Inner join
Outer join
union
Intersect
The number of cursors depend on the
number of queries
number of attributes
size of memory area
none of these
An advantage of the database management approach is
data is dependent on programs.
data redundancy increases.
data is integrated and can be accessed by multiple programs.
none of the above.
The maximum number of children in a B-tree of order m is
m+1
m
m-1
m/2
Specialization is a
top-down approach.
bottom-up approach.
left-right approach.
none of the above