Which statement about primary keys is correct? / Watter stelling oor primêre sleutels is korrek?

Question

Which statement about primary keys is correct? /  Watter stelling oor primêre sleutels is korrek?

Accepted Answer

A primary key uniquely identifies each record in a table / ’ n Primêre sleutel identifiseer elke rekord in ’n tabel uniek

Answer

A primary key is only used in raster datasets /  ’n Primêre sleutel word slegs in rasterdatastelle gebruik

Answer

A primary key always stores coordinate values /  ’n Primêre sleutel stoor altyd koördinaatwaardes

Answer

A primary key may contain duplicate values /  ’n Primêre sleutel mag duplikaatwaardes bevat

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