Roles in Database Environment

7/31/2019 Roles in Database Environment

1/25


2/25


3/25

Justin Charles N. RodrigROLES

Roles are designed to ease the administration of thend-user system and schema object privileges.

Each database user is granted a set of roles that he

she is authorized to perform.

.Any role can act as a single user or a group


4/25


DATABASE

DataAdministrator

DatabaseDesigner

End-UsersApplication

Programmer

Database

Administrator


5/25


Data Administrator

manage computer systems that provide efficient,

effective access to information (data) stored in larg

databases

responsible for the day to day operation of databas

management systems and for long range planningregarding system design and operation


6/25


Data Administrator

develop and implement data administration policie

technical standards and data models

consult managers in the organization to determine

and document data requirements, data collection a

administration policy, and data access rules


7/25


Data Administrator

advise others in the organization about the collecti

of data and its suitability for various uses

develop and administer policies and procedures for

accessing and using networks, backing up data and

recovering lost data


8/25


Database Administrator

Maintaining database and ensuring its availability

users

Monitoring database performance

Controlling privileges & permissions to database

users


9/25

Database

Administrator

Use

Acco

NumRole 4Role 3

Role 2System

Admin

All data

DATABASE

TransactionNumbers

UserProfiles


10/25


Database Administrator

Database backup and Recovery

Database security

planning for future expansion requirements


11/25


Database Designer

give developers recommendations about the DBMS

specificities

Responsible for designing the persistent data stora

to be used by the system, identifying the data to be

stored, choosing the structures to represent and sto

this data


12/25


Database Design Rules


13/25


Database Design Rules


14/25


Logical Design

Business

requirements

Needs

of the

business

business

processes

organizat

nal unitbusiness

entities

diagrams andreports

entity

relationship

business

process

process flow


15/25


Logical Design

Logical modelling should accurately render a visual

representation of the activities and data relevant to a

particular business


16/25


Physical Design

Logical

Design


17/25


Physical Modelling

Physical modelling is database software specific,

meaning that the objects defined during physical

modelling can vary depending on the relational

database software being used


18/25


Application Programmer

Design and implement canned transactions for

parametric users.

They uses application programs or fourth-generati

programming languages.


19/25


Application Programmer

Pack new applications for regular running

Test new applications and run it to existing ones

Restart or rerun unsuccessful jobs


20/25


End Users

persons who interact with the application directly

responsible to insert, delete and update data in the

database


21/25


Naive Users

Users that do not have any technical knowledge in

the DBMS

- They use the database through application program

by using simple user interface. They perform all

operations by using simple commands provided in thuser interface.


22/25


Naive Users

userApplication

program

menus

buttons

databas

?


23/25


Sophisticated Users

users who are familiar with the structure of databa

and facilities of DBMS


24/25


Sophisticated Users

user databas

SQL

Application

program


25/25

Documents

Roles in Database Environment