The relative identifier: the final, unique portion of a SID. Each domain controller issues RIDs from a block allocated to it by the RID master.
Also called relative identifier.
Read more: Microsoft Learn
In the Ultra Transcenders books
Each book explains RID in context, with comparison tables and the common traps.
Terms in this definition
- SID
Every Windows or Active Directory user, group and computer gets one, unique and never handed out again. Windows puts it in a person's access token when they log on.
- DC
A server running AD DS. Placing these servers in Azure as well as on-premises keeps synchronisation and user sign-in working if one location fails.
Related terms
- Data reduction
Microsoft's recommendations for keeping Power BI Import models lean: get rid of unnecessary rows and columns, aggregate where you can, choose compact data types, do column calculations in Power Query rather than DAX, and switch off auto date/time.
- FSMO
Five operations master roles, each owned by just one DC: per forest, the schema master and domain naming master; per domain, the RID master, PDC emulator and infrastructure master.
- Heap
A table without a clustered index. Its rows are kept in no particular order, and any nonclustered index locates them by row identifier (RID).