Decision Table
Introduction
Decision table is a tool that helps to organize the selection of one or more actions based on a series of conditions. It is a type of decision making system that uses a systematic approach to evaluate problems and offers a logical solution. The system is used when dealing with complex decision making. It is an ideal tool for making rational choices from a range of possibilities involving multiple variables. The decision table can be used to quickly understand the relationship between different facts and associated actions.
Definition
Decision tables are directed graphs with conditional choices and actions. Each action is associated with its own set of conditions, often multiple. The conditions are represented as boxes, and each condition is directly linked to a particular action. The decisions are made following the flow of the graph, in a series of steps. The purpose of a decision table is to explain the logic of a situation, while the decisions are made based on the conditions present.
Format
Decision tables are typically presented in a two-dimensional table. This consists of two sets of columns: conditions (vertical) and consequences (horizontal). The conditions column contains the facts that are used to determine which action should be taken, and the consequences row specifies the action for each set of conditions.
Examples
One classic example of a decision table is questions about your car. If your car check engine light is on and it’s been on for more than a week, you should take it in for an inspection. On the other hand, if the check engine light has been on for less than a week, you can wait until next car service and have it checked then.
Another example of a decision table is questions about a job. If the job pays minimum wage and you have no other sources of income, you should take it. If the job pays considerably more, then you should consider other options that might be even more lucrative.
Pros and Cons
Decision tables are beneficial to organizations because they provide a structure for gathering and weighing information, as well as helping to inform decisions that are based on relevant criteria. Furthermore, decision tables are more efficient than other decision making techniques, such as decision trees, because they do not require the same level of detail.
However, decision tables also have some drawbacks. For instance, they are best suited for smaller decisions that involve multiple variables, though they can be used for larger decisions as well. Additionally, while they are an efficient tool for decision making, they can also be difficult to update and maintain.
Conclusion
Decision tables are a useful tool for making decisions, providing organizations with an efficient way to organize and classify information. The table helps to structure the decision making process and allows for a more rational approach. Nonetheless, decision tables should only be used for smaller decisions and updated regularly to ensure accuracy.
