The keys associated with a table have properties that describe their behavior, just as tables and fields do. When you create a key, Microsoft Dynamics NAV automatically suggests a number of default values for these properties. Depending on the purpose of the key, you will sometimes want to change these default values.
Microsoft Dynamics NAV contains the following properties for keys.
Determines whether the system will maintain an index for the key. You cannot use a key unless it is enabled.
Defines the key.
Determines the fields for which the system will maintain a SumIndex.
Determines which key groups the key is a member of. By making the key a member of a predefined key group you can have the key defined and only enable it when it is going to be used.
Determines whether a SQL Server index corresponding to the Microsoft Dynamics NAV key should be created.
Determines whether SIFT structures should be created in SQL Server to support the corresponding SumIndexFields for the Microsoft Dynamics NAV key.
Sets a value that indicates whether the index is clustered.
Sets the actual fields that are used in the corresponding index on SQL Server.