Bordreservasjonen er bekreftet.

Because Norwegian usually writes compound nouns as a single word.

So:

• bord = table
• reservasjon = reservation
• bordreservasjon = table reservation

Then the definite ending is added to the whole compound:

• bordreservasjonen = the table reservation

This is very normal in Norwegian, even where English would often use two words.

It can be broken down like this:

• bord = table
• reservasjon = reservation
• -en = the definite ending

So the structure is:

bord + reservasjon + en

Literally, it is something like table-reservation-the, but in natural English that becomes the table reservation.

The main noun here is reservasjon, and bord just tells you what kind of reservation it is.

In Norwegian, the is usually attached to the end of the noun instead of standing in front of it.

Compare:

• en reservasjon = a reservation
• reservasjonen = the reservation

So in this sentence, the is built into bordreservasjonen.

This is one of the biggest differences from English.

Because in Norwegian compounds, the first noun is normally in its basic, indefinite form.

So:

• bord
  • reservasjon = bordreservasjon

not:

• bordetreservasjon

That would sound wrong.

This is very common in Norwegian compounds:

• bil dør becomes bildør = car door
• bok hylle becomes bokhylle = bookshelf
• bord reservasjon becomes bordreservasjon = table reservation

So even though the whole expression is definite, the first part of the compound usually stays indefinite.

Er is the present tense of å være = to be.

So:

• er = is / are

In this sentence, it links the subject to the description:

• Bordreservasjonen er bekreftet
• The table reservation is confirmed

It is doing the same basic job as is in English.

Bekreftet comes from the verb å bekrefte, which means to confirm.

Here, bekreftet is the past participle, and in this sentence it works like confirmed in English:

• er bekreftet = is confirmed / has been confirmed

So the sentence is describing the status of the reservation: the confirmation has already happened.

Because Norwegian often uses to be + past participle to describe a state or completed result.

So:

• er bekreftet = is confirmed / has been confirmed

This tells you the reservation now has the status confirmed.

A single verb form like bekrefter would mean confirms, which would give a completely different meaning.

For example:

• Restauranten bekrefter bordreservasjonen = The restaurant confirms the table reservation

That is an action done by someone.

But:

• Bordreservasjonen er bekreftet = The table reservation is confirmed

That is the resulting state.

Yes, but it is not exactly the same in tone.

• Bordreservasjonen er bekreftet sounds like the reservation has already been confirmed and that is now its status.
• Bordreservasjonen bekreftes is a passive form that can sound more formal, bureaucratic, or process-focused, something like is being confirmed or is confirmed in an official style.

In everyday confirmations, er bekreftet is usually the more natural choice.

Yes. It sounds very natural in messages, booking systems, emails, and other confirmation contexts.

It is short, clear, and typical of service language.

You might see it in situations like:

• restaurant booking confirmations
• SMS messages
• app notifications
• email confirmations

Yes. A few alternatives are possible, depending on style and context.

For example:

• Reservasjonen er bekreftet. = The reservation is confirmed.
• Bordbestillingen er bekreftet. = The table booking is confirmed.
• Reservasjonen av bordet er bekreftet. = The reservation of the table is confirmed.

Your original sentence is perfectly good, but Norwegian often has more than one natural way to express the same idea.

The indefinite singular form is en bordreservasjon.

So:

• en bordreservasjon = a table reservation
• bordreservasjonen = the table reservation

This is useful if you want to build related sentences:

• Jeg har en bordreservasjon. = I have a table reservation.
• Bordreservasjonen er bekreftet. = The table reservation is confirmed.