Databehandleren hjelper oss.

The ending -en is the usual definite ending for many common-gender nouns in Norwegian.

• databehandler = a data processor / data handler
• databehandleren = the data processor / the data handler

So instead of putting a separate word like English the in front, Norwegian often adds the definite ending to the noun itself.

Compare:

• en databehandler = a data processor
• databehandleren = the data processor

Norwegian, like German, very often makes compound nouns by joining words together.

Here:

• data = data
• behandler = handler / processor / someone who deals with something

So databehandler is a compound noun meaning something like data handler or data processor.

This is completely normal in Norwegian. English sometimes writes similar ideas as two words, but Norwegian usually prefers one combined word.

Hjelper is the present tense of the verb å hjelpe (to help).

So:

• å hjelpe = to help
• hjelper = help / helps
• hjalp = helped
• har hjulpet = have/has helped

In this sentence, Databehandleren hjelper oss, it means The data processor helps us or is helping us, depending on context.

Because oss is the object pronoun, while vi is the subject pronoun.

Compare:

• vi = we
• oss = us

In this sentence, databehandleren is the subject, and oss is receiving the action, so Norwegian uses oss:

• Databehandleren hjelper oss = The data processor helps us

Just like in English, you say helps us, not helps we.

Yes. This is the basic Norwegian sentence pattern:

subject + verb + object

So here:

• Databehandleren = subject
• hjelper = verb
• oss = object

This is the same basic order as in English:

• The data processor helps us

In Norwegian, definiteness is often shown by attaching an ending to the noun instead of using a separate article before it.

So English:

• the data processor

Norwegian:

• databehandleren

This is one of the first big differences English speakers notice. Norwegian does have a separate definite marker in some situations, especially with adjectives:

• den store databehandleren = the big data processor

But in your sentence, there is no adjective, so the ending -en is enough.

A rough guide for an English speaker:

• databehandleren ≈ DAH-ta-beh-HAN-dler-en
• hjelper ≈ YEL-per
• oss ≈ oss with a short vowel, somewhat like oss in a clipped pronunciation

A few helpful notes:

• hj in hjelper is usually pronounced like y at the start, so hjelper sounds close to yelper
• The r may sound different depending on dialect
• Norwegian pronunciation varies a lot by region, so exact sound can differ

It depends on context.

In everyday language, it could refer to:

• a person who handles data
• a system or processor
• an organization with responsibility for processing data

In legal or technical contexts, especially around privacy or GDPR, databehandler often means data processor in a formal sense.

So the sentence could mean slightly different things depending on where you saw it.

Yes, but it means something different.

• En databehandler hjelper oss = A data processor helps us
• Databehandleren hjelper oss = The data processor helps us

The first is indefinite; the second is definite.

So use:

• en databehandler when you mean one unspecified data processor
• databehandleren when you mean a specific one already known from the context

Databehandler is normally a common-gender noun, which is why it takes:

• en databehandler in the indefinite singular
• databehandleren in the definite singular

Yes, gender matters in Norwegian because it affects articles and endings.

For this noun, the most useful forms are:

• en databehandler
• databehandleren
• databehandlere = data processors
• databehandlerne = the data processors