{"ref":"content:sap-cloud-platform-backend-service-tutorial-11-cds-magic-key-generation","page":"/content/sap-cloud-platform-backend-service-tutorial-11-cds-magic-key-generation","json":"/content/sap-cloud-platform-backend-service-tutorial-11-cds-magic-key-generation.json","generated":"2026-10-26","drafted_with_ai":true,"entity":{"id":"sap-cloud-platform-backend-service-tutorial-11-cds-magic-key-generation","title":"SAP Cloud Platform Backend service: Tutorial [11]: CDS : magic: key: generation","url":"https://community.sap.com/t5/technology-blog-posts-by-sap/sap-cloud-platform-backend-service-tutorial-11-cds-magic-key-generation/ba-p/13417795","content_type":"blog","published_on":"source:sap-community","explains":[{"ref":"capability:data-modelling","applies_to":{"ecosystems":["cap"]}},{"ref":"capability:odata","applies_to":{"ecosystems":["cap"]}}],"summary":"Explains CDS's UUID key type: giving a key property `UUID` gets its value generated automatically instead of a hand-picked unused number, as [data modelling](capability:data-modelling) lets an element's type do, at the cost of a 36-character value unfit for a user-facing display. It then works out how that generated value is addressed in a single-entity read URL — bare brackets in [OData](capability:odata) V4 against the `guid'...'` literal V2 requires — citing the OData specification for the difference.","short":"Generated UUID keys in CDS for SAP Cloud Platform Backend service","author":"CarlosRoggan","published":"2019-03-15","provenance":{"discovered_via":[{"source":"source:sap-community","channel":"cap-tag"}],"first_seen":"2026-10-12"},"drafted_with_ai":true},"readings":{"liveness":[{"label":"Checked against the source","tier":"unknown","evidence":"nobody has checked it"},{"label":"Source reachable","tier":"unknown","evidence":"not crawled"},{"label":"Age","tier":"poor","evidence":"published 91 months ago"}],"compatibility":[{"label":"Version","tier":"unknown","evidence":"no version declared"},{"label":"Moved since?","tier":"poor","evidence":"@sap/cds 9.6.0, 2025-12 and 3 more"},{"label":"Findings","tier":"good","evidence":"none flagged"}],"reach":[{"value":4354,"unit":"views"},{"value":2,"unit":"comments"},{"value":6,"unit":"likes"}]},"signals":{"views":4354,"likes":6,"comments":2,"metrics_at":"2026-10-25"},"series":null,"edges":{"authors":[]}}