Skilirium

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Kompetentsi Andmete modelleerimine knobit · K-617 · Oskus

Recognises a physical domain differing from the logical domain

Mida see tähendab

A datatype, length, scale, character set or nullability that admits values the logical domain forbids, or cuts off values it allows. Includes a foreign key typed differently from the key it references.

Kuidas seda hinnatakse

Flags the deficient case and passes the acceptable one. Deficient: `account_currency_code VARCHAR(50)`: `'EUR'`, `'eur'` and `'EUR '` all load. `account_identifier VARCHAR(10)` for a logical length of 20. `payment.account_id INTEGER` referencing `BIGINT`. A date as `VARCHAR`. A name column in a character set that cannot hold õ, ä, ö, ü, š, ž Acceptable: `CHAR(3)` with an uppercase-letters check; lengths at least the logical ones; foreign-key types identical to the referenced key; `DATE`; a Unicode character set (`PHY-008`, `PHY-023`)

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