CƠ SỞ DỮ LIỆU ĐỀ 1

Front

A database is an organized collection of ________ related data.

Back

logically

Front

Older systems that often contain data of poor quality are called ________ systems.

Back

legacy

Front

Program-data dependence is caused by: file descriptions being stored in each database application.

Back

file descriptions being stored in each database application.

Front

Because applications are often developed independently in file processing systems:

Back

unplanned duplicate data files are the rule rather than the exception.

Front

Relational databases establish the relationships between entities by means of common fields included in a file called a(n):

Back

relation.

Front

A(n) ________ is often developed by identifying a form or report that a user needs on a regular basis.

Back

user view

Front

A graphical system used to capture the nature and relationships among data is called a(n):

Back

data model.

Front

Data that describe the properties of other data are:

Back

metadata.

Front

All of the following are properties of metadata EXCEPT: data definitions, rules or constraints, data structures.

Back

processing logic.

Front

A person, place, object, event, or concept about which the organization wishes to maintain data is called a(n):

Back

entity.