INFORMATION SYSTEMS & DATABASES
Data systems perform a set of information processes necessitating participants, data/ information and information technology. The processes are collecting, analysing, organising, processing, storing/ retrieving, transmitting/ receiving and displaying.
CHARACTERISTICS OF INFORMATION SYSTEMS
Information systems are created to supply access to details for an organisation or individual and enjoying the following qualities:
вЂў ORGANISATION OF DATA INTO INFORMATION- Data must be organised prior to it can be analysed by the information system. This involves careful although or the producing information will be meaningless. This might require selecting, summarising or perhaps classifying. Data is organized using buildings such as info dictionaries.
вЂў EXAMINATION OF INFORMATION TO GIVE KNOWLEDGE- Use of information and the resulting expertise is the aim of an information system. For people to achieve knowledge the knowledge must be analysed. Information devices provide a variety of tools to get analysis of data such as desks, queries and reports. People make decisions based on the knowledge they obtain from an info system.
TYPES AND FUNCTIONS OF INFORMATION SYSTEMS
вЂў TRANSACTION CONTROL SYSTEMS (TPSs)- collect, store, modify and retrieve the daily orders of an organisation eg. a point-of-sale fatal. There are two sorts of transaction processing: -BATCH PROCCESSING collects the transaction data right into a group and processes this later and is currently utilized where the data is in daily news form just like cheques. This sort has a period delay. -REAL-TIME PROCESSING functions where every transaction can be immediately refined providing quick confirmation nonetheless it does need access to a web database.
вЂў DECISION SUPPORT SYSTEMS- assist people to make decisions by providing details, models and analysis tools. They can be utilized on a daily basis or when an business has to react to something unexpected or generate changes. Qualified systems can be a type of DSS.
вЂў EXPERT SYSTEMS- provide info and resolve problems that will otherwise demand a person skilled in that field (an expert). They are useful in diagnosing, monitoring, selecting, developing, predicting and training. An expert system asks users a set of questions and compares answers to a understanding base, which is a set of basic facts and if-then guidelines supplied by an experienced. It must then simply reason to get a solution. They are not always appropriate and the choice is up to the user.
вЂў MANGEMENT INFO SYSTEMS (MISs)- provide info for the organisation's mangers. An LOS presents simple facts about the performance of the organisation for example. a budget or perhaps report. The awareness of just how performance is measured delivers motivation to get workers and helps make decisions. A special type is called the Executive Details System (EIS) which is designed for the information requires of elderly mangers and offers strategic info.
вЂў OFFICE SOFTWARE SYSTEMS- provide people with effective ways to total administrative responsibilities in an company. They use submission software tool such as phrase processors, directories etc . and also use conversation technology.
EXAMPLES OF DATABASE INFORMATION SYSTEMS
Data systems that use a repository are called repository information devices. Databases are accessed with a database management system (DBMS) which has no data in it but is a program that allows the user to enter keep and provide access to a data source. The user can pick which data is required and how to display it in a important way. The word database can often be used rather than DBMS.
ORGANISING is the means of arranging, representing and formatting data and involves the concept of a databases. DATABASE can be an prepared collection of data.
NON-COMPUTER AND COMPUTER STRUCTURED METHODS
A database is simply a place to set up and retail outlet data so it may be...