COMPUTING 1 (NATURE OF INFORMATION SYSTEMS (Management of Information…
NATURE OF INFORMATION SYSTEMS
Advantages of Information Systems
Its advantages are: better efficiency, better quality products, better service, greater security.
Internal Environment: are all the internal components of the organization that affect the implementation of the information system: organizational structure, personal, monetary, equipment, furniture, physical space, physical location, etc.
External environment: these are all external components of the organization that affect the implementation of the information system: the political and economic situation of the country, distributors of furniture, materials and equipment, and so on.
Origins of Information Systems
Information System Activities
The data processing consists of basic activities: Capture of the input data, manipulation of data, handling of output results.
Life cycle of Information Systems
It consists of several steps
Raw Material of Information Systems
The data is facts, the raw material of the information. The data is represented by symbols, but can only be considered as information in a very limited sense.
Definition of Information Systems
It is a disposition of people, activities, data, networks and technology integrated with each other in order to support and improve the day-to-day operations of a company, meet the information needs for problem solving and decision making by managers. of a company.
Management of Information Systems
Users of the information system
Information System Analyst
Owners of information systems
Information systems designers
Information system programmers
TYPES AND USES OF INFORMATION
Creation of texts
Text format specifications
General applications of the Packages
of Database Management
of Database Management
Components of a Database
Electronic Calculation Sheet
Create models as advanced as the user is able to perform.
Create graphics in a variety of styles (lines, bars, countries, etc.).
Create macros (programs) to increase the built-in functions, or perform non-standard or complicated procedures in a spreadsheet.
Create a database with complicated criteria searches.
Logic of the Information Flow
Simple selection logic
Topologies of Data Communication Networks
Types of Data Communication Lines
Data Communication Techniques
Data Transmission Channels
Narrow band, voice band, broadband
Program Flow Diagram
Data flow diagram
For information systems, symbols are used in the data flow diagram
Structure of the Information Flow
It must start from the beginning and end with an ending.
The entry and exit of information is independent of the process.
The conditions must have one entrance and two exits.
Informations flows should be documented.
Distribution of Information
Types of Information Output
Output by email
Use of a Data Communication Package
Processing by batch
Techniques and Strategies
Control aspects: Control, Internal, production, Quality, security, data integrity, operation efficiency.
Choice of an Alternative:
Output Requirements, Input Requirements, File Requirements and Maintenance, Process Specifications
Analysis of the information
Causes problems and opportunities to be captured more quickly.
Allow managers to devote more time to planning.
Helps to carry out decisions
Properties of the Required Information:
Accurate, timely, complete, concise information
Visual display station
Point of sale station