文档介绍：Principles of Database Systems(A) (final test)
— 0201~puter Science & Technology
Name________________ ID____________________
Please fill the answers into the following table:
Multiple Choice
1D
2A
3B
4A
5D
6A
7D
8B
9A
10D
11C
12A
13D
14D
15A
16D
17B
18B
19C
20A
Multiple Choice( 2 points * 20)
Which is NOT ponent of a relational database?
Entity
Table
Attribute
Hierarchy
Which is NOT an advantage of the database approach?
Limited data sharing
Minimal data redundancy
Improved data quality
Reduced program maintenance
A formal, top-down methodology that uses a data orientation to create and maintain information systems.
Enterprise data modeling
Information engineering
Information system architecture
Strategic planning factors
In this step of the SDLC, one writes, tests, and installs the programs that process the database.
Database implementation
Physical database design and definition
Database maintenance
Logical database design
Which is NOT an example of a strong entity type?
STUDENT
COURSE
DEPARTMENT
STUDENT_ID
A property or characteristic of an entity type is a(n)
attribute.
relationship.
field.
trait.
An attribute whose value can be calculated from related attribute values is a(n) ___ attribute.
composite
multivalued
stored
derived
The mon type of relationship encountered in data modeling is the ____ relationship.
un