Додати до Chrome
Purpose of Conceptual Schema:
Showsrelevant info particular to user, hides rest of the info
Shows
relevant info particular to user, hides rest of the info
Describesentities, their relationships and constraints
Describes
entities, their relationships and constraints
Describesthe physical storage ofdatabase
the physical storage of
database
Describesstructure of wholedatabase
structure of whole
The Database Management System (DBMS) is defined as a software system that allows the user ...
to create database objects
to provide a unique interface for any format of data
to define, manipulate, and manage data in a database
to provide control of access to the data
to store data in a cloud storage
Choose the appropriate terms
Representedusing a tree-diagram
Represented
using a tree-diagram
Dataelements are stored in different tablesmade up of rows and columns
Data
elements are stored in different tables
made up of rows and columns
Canrepresent one-to-one and many-to-many aswell
Can
represent one-to-one and many-to-many as
well
Which of the following is not a data model?
Hierarchical data model
Network data model
Linear data model
Relational data model
What is a relational database?
A database that stores data in a hierarchical structure
A database that stores data in a single table
A database that stores data in tables consisting of rows and columns
A database that stores data in a network structure