6. etapp: Füüsilise andmemudeli kujundamine
Kompetentsi Andmete modelleerimine knobit · K-620 · Oskus
Recognises a business fact held in physical row order
Mida see tähendab
A business fact read from row order, insertion order or the order of generated key values rather than from a column. It changes with parallel loads, sequence caching, reorganisation or migration.
Kuidas seda hinnatakse
Flags the deficient case and passes the acceptable one. Deficient: "The current address is the one with the highest `address_id`"; "payments in order of booking" read from identity order Acceptable: `booked_at`, `valid_from` or a version number as columns, and the current row identified by its data
Tugineb
- Explains the absence of row order in relational tablesK-662 · Teadmine
Vajalik
- Puudub