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110782
DBMS + MIS + DSS
Descrição
A Level ICT (Unit 3.1) Mapa Mental sobre DBMS + MIS + DSS, criado por scott.dowle em 27-05-2013.
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ict
unit 3.1
ict
unit 3.1
a level
Mapa Mental por
scott.dowle
, atualizado more than 1 year ago
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scott.dowle
quase 11 anos atrás
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Resumo de Recurso
DBMS + MIS + DSS
DBMS
3 Main Features
Data Definition Language
Allows tables to be defined by field names, data type, primary key etc
Data Manipulation Language
Changing data via operations such as - insert, delete, update, and processing data
Helped by Queries
Data Dictionary
Structure + attributes of data items used in database
Includes names + descriptions of tables as well as data types
Metabdata - database of the database
Role of Database Administrator (DBA)
Defining/ maintaining/ modifying structure of tables etc
Controlling access to database
Assigning access rights/ usernames + passwords
Identifying new user query and report requirements
Manage/ Maintain backups
Ensure compliance with legislation
MIS
Internal Data
Company Info + Operations
External Data
Competitors, Population shifts, Economic + Social factors, Govt. legislation
Levels Of Management
Strategic
Chief Executives, Directors etc.
Objectives, Long Term Goals, plan decisions, make investment decisions
Requires
Reports on overall performance, relative to past performance and competitors
Possible effects of decisions
Summary reports on accounting and different departments
Tactical
Heads of Department, Supervisors etc.
Manage budgets, allocate resources, monitor progress, provide info to managers
Requires
Staff performance
Requirements for senior management
Available resources
Operational
Individuals with responsibility
Day to day operation
Monitor effectiveness of operations
Instructions from supervisors about operational requirements
Effective use of resources
Purpose
Manage and control internal operations
Allow access to relevant data and present it effectively
Access to real-time data
Features
Transform large amounts of raw data
Utilizes data from many sources
Present data in meaningful format
Used at different levels of management
DSS
Integrated tools designed to help problem solving - such as scheduling work activities, resource allocation and forecasting
Main Features
Assist managers with complex problems
Apply different business models
May incorporate Expert system
Assist decision making at strategic, tactical, operational
3 Components
DBMS
Internal + External data analysed by DDS
Support Tools
User to interact with the system
Model Management System
Takes input + performs calculations to form output (forecast)
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