Rule

Decay

Identifies the trusted value based on the trust levels and the decay rate of the field values. The trust levels indicate the confidence you have in the source system. The decay rate indicates the rate at which the trust level must decrease over a period of time. You can configure different trust levels and decay rates for each source system.

When the trust level of a source system decreases, the rule identifies another source system with a higher trust level during that time period.

For example, configure the decay rule for the price field group in the Informatica Customer 360 source system with maximum and minimum trust scores of 80 and 40. When you set the decay period to 10, it indicates that the trust score decays from maximum to minimum over that period.

The following image shows the decay rule configuration for the price field group:

You can configure a decay rule for fields and field group based on their values or values of other root fields. If you use a picklist, the code value of the picklist determines the survivorship.

For example, you want to survive the patient ID value based on the age of the patient. To accomplish this requirement, configure a decay rule for the Patient ID field based on the Age field.

Maximum

Identifies the maximum value of a field as the trusted value.

The following table lists the maximum value for different types of fields:

Field Type	Value
Boolean	True
Date	Latest time stamp.
Date and Time	Latest time stamp.
Double	Highest numeric value.
Decimal	Highest numeric value.
Integer	Highest numeric value.
Text	Maximum string value based on lexicographical sort order. Sorting is case-sensitive. In sorted data, uppercase letters come before lowercase letters.
Picklist	Maximum code value based on lexicographical sort order. Sorting is case-sensitive. In sorted data, uppercase letters come before lowercase letters.
Business Entity Record	Maximum business ID value based on lexicographical sort order. Sorting is case-sensitive. In sorted data, uppercase letters come before lowercase letters.

You can configure a maximum rule for fields and field group based on their values or values of other root fields. If you use a picklist, the code value of the picklist determines the survivorship.

For example, you want to survive the patient ID value based on the age of the patient. To accomplish this requirement, configure a maximum rule for the Patient ID field based on the Age field.

Minimum

Identifies the minimum value of a field as the trusted value.

The following table lists the minimum value for different types of fields:

Field Type	Value
Boolean	False
Date	Earliest time stamp.
Date and Time	Earliest time stamp.
Double	Lowest numeric value.
Decimal	Lowest numeric value.
Integer	Lowest numeric value.
Text	Minimum string value based on lexicographical sort order. Sorting is case-sensitive. In sorted data, uppercase letters come before lowercase letters.
Picklist	Minimum code value based on lexicographical sort order. Sorting is case-sensitive. In sorted data, uppercase letters come before lowercase letters.
Business Entity Record	Minimum business ID value based on lexicographical sort order. Sorting is case-sensitive. In sorted data, uppercase letters come before lowercase letters.

You can configure a minimum rule for fields and field group based on their values or values of other root fields. If you use a picklist, the code value of the picklist determines the survivorship.

For example, you want to survive the patient ID value based on the age of the patient. To accomplish this requirement, configure a minimum rule for the Patient ID field based on the Age field.