sequential access storage
direct access storage
random access storage
none of the above
the uniqueness of the data in a database
the correctness and completeness of the data in a database
the un redundancies of the data in a database
Data independence of the database
1 Gbps
56 Mbps
100 Mbps
256 Mbps
i and ii only
ii and iii only
i and iii only
All i, ii iii
Foreign key
Secondary key
Primary key
Alternate key
top-down approach.
bottom-up approach.
left-right approach.
none of the above
Partner
Mutual
Exclusive
Atomic
parallel
serial
analog
digital
primarykey
superkey
candidatekey
foreignkey
System View
User View
Logical View
Data View
1NF
2NF
3NF
BCNF
BCNF is stronger than 3NF
Relational algebra is a non-procedural language
Every conflict serializable schedule is view serializable.
none of the above
i and ii only
ii and iii only
i and iii only
i only
Ring
Bus
Mesh
none of these
i, ii only
ii and iv only
ii and iv only
i, iv only
Immediate database modification
Graph-based recovery
key dependencies
none of the above
insert
modify
lookup
none of the above
Circle
Rectangle
Hyperbola
Triangle
TO clause
FROM clause
RANGE clause
none of the above
loses its contents when power is switched off.
doesnt loses its contents when power is switched off.
creates backup when power is switched off.
none
UPDATE
DROP
ALTER
DELETE
Tuple
Record
Relationship
Field
Dotted rectangle
Square
Doubly outlined rectangle
Diamond
i only
ii, only
ii, iii only
none of the above
The data dictionary is normally maintained by the database administrator.
Data elements in the database can be modified by changing the data dictionary.
The data dictionary contains the name and description of each data element.
The data dictionary is a tool used exclusively by the database administrator.
check
unique
not null
is duplicate
300MHz
1GHz
5GHz
10 GHz
primary storage
secondary storage
tertiary storage
none of the above
magnetic tape
juke box
optical disk
All of the above
Physical data independence
Logical data independence
External data independence
Static data