A single piece of information about a customer, such as their name, address, or date of birth. The plural 'Kundendaten' (customer data) is much more common and refers to all of this information as a whole.
example
Jedes einzelne Kundendatum unterliegt den strengen Regeln der Datenschutz-Grundverordnung.
Every single customer data item is subject to the strict rules of the General Data Protection Regulation.
Usage tips
Compound word
The word is made up of 'Kunde' (customer) and 'Datum' (data item). The '-n-' is a linking element that connects the two parts. Literally, then, it means a single piece of information belonging to a customer.
EXAMPLE
Die Telefonnummer ist ein wichtiges Kundendatum für den Lieferservice.
The phone number is an important customer data item for the delivery service.
Meaning of 'Datum'
Be careful with the word element 'Datum': while 'das Datum' usually means the calendar date, the plural 'die Daten' in German means 'data'. 'Kundendatum' therefore refers to data, not to a date.
EXAMPLE
Das Geburtsdatum ist ein sensibles Kundendatum.
The date of birth is a sensitive customer data item.
Singular vs. plural
The singular 'das Kundendatum' (customer data item) is used only rarely, namely when you are talking about one single, specific piece of information. Almost always, the plural 'die Kundendaten' (customer data) is used to refer to the totality of customer information.
EXAMPLE
Das Unternehmen muss die Kundendaten sicher speichern.
The company must store customer data securely.
Typical verbs
Mostly in the plural ('Kundendaten' (customer data)), the word is combined with verbs of data management: 'Kundendaten sammeln' (to collect customer data), 'Kundendaten schützen' (to protect customer data), 'Kundendaten verarbeiten' (to process customer data), or 'Kundendaten löschen' (to delete customer data).
EXAMPLE
Unternehmen dürfen Kundendaten nicht ohne Erlaubnis weitergeben.
Companies may not pass on customer data without permission.
Compare with
near_synonym · confusable
Kundendatum vs Datum
date
'das Datum' and 'das Kundendatum' can both be a single piece of information. In everyday language, however, 'das Datum' usually means an exact day in the calendar. 'das Kundendatum' is a piece of information about a customer, for example their name, address, or date of birth. Most often, the plural 'Kundendaten' (customer data) is used. There is a risk of confusion because 'Datum' in the singular and 'Daten' in the plural look very similar. For an appointment or calendar day, you say 'Datum'. For information about customers, you say 'Kundendaten'.
Kundendatum
Die Mitarbeiterin ändert die Kundendaten, weil der Kunde umgezogen ist.
The employee changes the customer data because the customer has moved.