Itemsid

Itemsid is a term used in computing to denote the unique identifier assigned to an item within a collection, dataset, or record repository. It serves as a stable reference that enables retrieval, linking, and management of items across software components.

In practice, an itemsid is stored as a field such as a database column or an object property. Formats vary widely and can include simple integers, alphanumeric codes, or globally unique identifiers (GUIDs/UUIDs). Some schemas embed metadata in the identifier, such as the item type or source, by reserving parts of the code.

Generation methods include auto-incrementing integers, UUID generation, or deterministic hash-based schemes derived from item content. The chosen scheme affects indexing performance, data migration, and privacy. An effective itemsid is unique across the dataset and stable over time to preserve referential integrity when items are referenced by other records, documents, or external systems.

In data interchange and APIs, itemsid is often the canonical key used to identify an item, with secondary attributes like name or description used for human-facing displays. Some systems distinguish between internal itemsid values used for storage and external identifiers exposed to clients.

See also: item ID, UUID, GUID, primary key.