Welcome to your 320 Chapter Two
this quiz covers database management chapter two.
Ahmed Farouk
A data model is usually graphical
The terms data model and database model are often used interchangeably.
He is more concerned with data location, formatting, and specific reporting requirements
Each row in the relational table is known as an entity instance or entity occurrence in the ER model
____ are normally expressed in the form of rules.
A(n) ____ is bidirectional
A(n) ____ is the equivalent of a field in a file system.
Which of the following is a source of business rules
The relational data model was developed in the ____ while Object orineted was developed in ----
A(n) ____________________ is a brief, precise, and unambiguous description of a policy, procedure, or principle within a specific organization.
which relation is only conceptual
refer to a new generation of databases that address the specific challenges of the Big Data era
----- is the end users view of the data environment.
represents a global view of the entire database.
is the representation of the database as seen by the DBMS
operates at the lowest level of abstraction, describing the way data are saved on storage media such as disks ortapes.
