Levels of Management:
Management can be classified into three levels:
Strategic management
Tactical management
Operational management
These classifications are based on the type of decisions that are taken at each level, and different types of information are required for each.

Types of Information:
Strategic Information:
This type of information concerns the organization as a whole or large parts of it.
It is often in summary form without too much detail and is generally relevant to long-term decisions.
It is often forward-looking and prepared on an ad-hoc basis.
It may contain qualitative and quantitative data, with a high degree of uncertainty, especially in long-term forecasts.

Tactical Information:
This type of information relates to departments and operations.
It is used to decide how resources should be used and monitor their usage.
It is generally relevant to short- to medium-term decisions and may often include performance measurement based on historical data.

Operational Information:
This is day-to-day information used for control purposes and transaction processing.
It typically concerns specific jobs, transactions, workloads, or work groups.
It is forward-looking but often relates to very short-term periods, providing factual, routine data without much uncertainty.

Qualities of Good Information:
Relevance: Information must have a clear purpose and use.
Reliability: Information should be accurate and complete for its intended purpose.
Timeliness: Information must be available when required.
Accuracy: The information must be free of errors.
Accessibility: Information should be readily accessible to the relevant users.
Cost-effectiveness: The cost of obtaining the information should not outweigh its benefits.
Confidence: The information should be reliable enough to inspire user confidence.