Data may be stored in the following formats _____.
A -
Databases
B -
Rntities (thực thể)
C -
Entities and files
D -
Files and databases
2-
A(n) _____ is less expensive and easier for novice users to use, but it does not have the features that are necessary to support mission-critical or large scale systems.
A -
Database (CSDL)
B -
Database management system
C -
End-user database administrative system
D -
End-user database management system
3-
A(n) _____ can support large volumes of data and support applications that run an entire company.
A -
Database management system
B -
End-user database administrative system
C -
End-user database management system
D -
Enterprise database management system
4-
A(n) _____ is basically an electronic list of information that is stored on a disk.
A -
Sequential access file
B -
Unordered sequential access file
C -
Ordered sequential access file
D -
Eandom access file
5-
SQL operates on _____
A -
Rows of data at a time
B -
Columns of data at a time
C -
Tables of data at a time
D -
The entire database
6-
Which of the following is NOT a characteristic of current object-relational databases?
A -
Storage of objects in the relational table structure
B -
Good support for typical data management operations
C -
SQL support
D -
Support for inheritance
7-
In an object-oriented database, an extent is the equivalent to a(n) _____ in a relational database.
A -
Attribute
B -
Table
C -
Row
D -
Relationship
8-
The type of database that is most capable of supporting complex data types is _____.
A -
Sequential files
B -
Relational DBMS
C -
Object-oriented DBMS
D -
Object-relational DBMS
9-
The process of ensuring that values linking tables together through the primary and foreign keys are valid and correctly synchronized is _____
