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https://en.wikipedia.org/wiki/Decision_support
A decision support system (DSS) is an information system that supports business or organizational decision-making activities. DSSs serve the management, operations and planning levels of an organization (usually mid and higher management) and help people make decisions about problems that may be rapidly changing and not easily specified in advance—i.e. unstructured and semi-structured ...
https://www.oreilly.com/library/view/data-warehousing-fundamentals/9780471412540/9780471412540_operational_versus_decision-support_sys.html
1.4. OPERATIONAL VERSUS DECISION-SUPPORT SYSTEMS What is a basic reason for the failure of all the previous attempts by IT to provide strategic information? What has IT been doing all … - Selection from DATA WAREHOUSING FUNDAMENTALS: A Comprehensive Guide for IT Professionals [Book]
http://www.decisionmanagementsolutions.com/the-difference-between-decision-support-systems-and-decision-management-systems-for-decision-automation/
Decision Management Systems, unlike Decision Support Systems, are focused on decision automation, taking or recommending this action. Decision Support Systems are focused on helping (supporting) someone make the decision, not necessarily on the actions to be taken. This distinction is critical to the difference between the two classes of systems.
http://www.myreadingroom.co.in/notes-and-studymaterial/65-dbms/561-operational-data-and-decision-support-data.html
To provide effective update performance, operational systems store data in many tables, each with a minimum number of fields. From the data analyst’s point of view, decision support data differ from operational data in three main areas: time span, granularity, and dimensionality. Operational Data Vs decision support data. You May Also Like:
https://en.wikipedia.org/wiki/Operations_support_system
Operations Support Systems (OSS), or Operational Support Systems in British usage, are computer systems used by telecommunications service providers to manage their networks (e.g., telephone networks). They support management functions such as network inventory, service provisioning, network configuration and fault management.
http://dssresources.com/faq/index.php?action=artikel&id=146
Decision support data stores rarely include the details of each operating transaction. DSS data may include transaction summaries. In general, DSS data are integrated from multiple operational databases and DSS data are sometimes aggregated and summarized in the database to support predefined decision support queries.
http://www.yourarticlelibrary.com/information-technology/decisions-making-strategic-tactical-and-operational-decisions-business-management/10271
These decisions are based on facts regarding the events and do not require much of business judgement. Operational decisions are taken at lower levels of management. As the information is needed for helping the manager to take rational, well informed decisions, information systems need to focus on the process of managerial decision making.
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