Recognises a length taken from sample data
https://knobit.org/id/knobit/K-817
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| Context functions | Result evaluation |
|---|---|
| Knobit creation methods | AI generated, human edited |
| Knobit types | Skill |
| LCG purposes | Assessing the learner's knowledge or skill state |
| LCG purposes | Selecting an assessment task or learning activity |
| action verb | Recognises en |
| applies knowledge | Explains attribute domains |
| assessment criterion | Flags the deficient case and passes the acceptable one. Deficient: `dim_account.account_number VARCHAR(20)` on a mart that will also hold non-Estonian accounts: correct for every Estonian IBAN and 14 characters short of a Maltese one Acceptable: Either `VARCHAR(34)` from the standard with the 20-character Estonian form as a DQ rule scoped to Estonian IBANs, or `VARCHAR(20)` with the Estonia-only scope written in the column `comment` and in the rule. What is not acceptable is a length nobody chose en |
| assessment method | skill-tests task: Generated DDL review, Postgres and Snowflake (DDL review skills) en |
| conforms to profile | https://oppekava.edu.ee/a/Knobitite_kirjeldamise_ja_seostamise_reeglid#LCG-KNOBIT-0.1 |
| dcterms:identifier | K-817 |
| dcterms:license | https://creativecommons.org/licenses/by/4.0/ |
| dcterms:source | Review checklist 05-ddl, row 17; ISO 13616; this skill en |
| depends on knobit | Recognises a physical domain differing from the logical domain |
| expected result | The column and the length its domain standard sets en |
| owl:sameAs | https://bitbucket.org/reffa/ontology/id/knobit/data-modelling/08-ddl/17 |
| rdfs:label | Recognises a length taken from sample data en |
| schema:creativeWorkStatus | accepted |
| schema:isPartOf | Data modelling (DAMA-DMBOK2) |
| skos:altLabel | Length taken from the sample, not the domain (generated DDL) en |
| skos:definition | A `VARCHAR`/`CHAR` sized from the data that happened to be loaded in development. An IBAN is up to 34 characters, a BIC is 8 or 11, a SEPA party name is 70. Too short truncates on some engines and errors on others, and a truncated IBAN is a payment to nobody. en |
| skos:prefLabel | Recognises a length taken from sample data en |
| target object | VARCHAR or CHAR length en |
Used by
| includes knobit | Generates DDL per target dialect and reviews it against model, engine, data and deployment |
|---|---|
| requires knobit | Generate and review DDL |