Cells

The cells in the rows that form the rules in a decision table contain the values that complete the conditions and actions.

Merged or split cells

In condition columns, you can merge or split the cells in subcolumns and change the operator. For example, the third row in the following table is also about Age, but it includes the operator foris more than, which takes only one value, instead of is between, which requires two values:

	Age
	Min	Max
1	18	25
2	26	40
3	>40

Partitioned cells

A partition is a group of cells in a condition column with a common cell next to them. In the following table, cells A and B in the Grade column each have a partition of cells in the Loan column.

	Grade	Loan		Insurance
	Grade	Min	Max	Rate	Required
1	A	<100,000			false
2		100,000	300,000	0.001	true
3		300,000	600,000	0.003	true
4		≥600,000		0.005	true
5	B	<100,000			false
6		100,000	300,000	0.0025	true
7		300,000	600,000	0.005	true
8		600,000	800,000
9		≥600,000		0.0075	true

Each numbered row in the table still forms a rule. Partitioning helps you compare rules with similar conditions, and find overlaps and gaps between values of the rules.

Empty cells

A row can contain empty cells. If an empty cell is in a condition column, the condition is always satisfied. If an empty cell is in an action column, the action cell is ignored.

In the following table, the first rule does not set an insurance rate.

	Grade	Loan		Insurance
	Grade	Min	Max	Rate	Required
1	A	<100,000			false
2		100,000	300,000	0.001	true
3		300,000	600,000	0.003	true
4		≥600,000		0.005	true