Zoals jullie misschien al gemerkt hebben wordt de header van jullie kolom telkens vergezeld van een groene / deels groene, deels bruine / deels groene, deels rode lijn.
Om deze verschillen te begrijpen, kan je een analyse van de kolommen zichtbaar maken via het tabblad ‘Weergeven‘ > groep ‘Voorbeeld van gegevens‘ > ‘Kolomkwaliteit‘ / ‘Kolomdistributie‘ / ‘Kolomprofiel‘ aanvinken.
KOLOMKWALITEIT
Het bruine gedeelte geeft het percentage lege velden in de kolom weer.
Het rode gedeelte geeft het percentage fouten in de kolom weer.
KOLOMDISTRIBUTIE
Kolom ‘BevragingsID‘: hier zijn alle waarden uniek, dus allemaal verschillend.
Kolom ‘Workshop‘: hier zie je 12 verschillende waarden, waarvan er 1 slechts 1x voorkomt, dus uniek is.
Kolom ‘Cursist‘: hier zijn momenteel 41 verschillende cursisten, waarvan 38 uniek, dwz dat ze maar 1 keer voorkomen. Dit betekent dat sommige cursisten meerdere workshops gevolgd hebben.
Wil je een aparte entiteit ‘Cursisten’ maken, met gegevens (CursistID, E-mail, Gevolgde Workshops…) dan kan je uit deze kolom de unieke waarden distilleren om elke cursist maar 1x te hebben.
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