Learn Swedish: Databasen låter sig implementeras utan problem. - The database can be implemented without problems.

Literally, låter sig means 'lets itself'. When combined with a passive verb, it creates a pseudo-passive construction that describes what is possible to do to the subject. The database 'lets itself be implemented', which translates naturally to English as 'can be implemented'.

Why does implementeras end in an -s?

The -s makes it a passive infinitive (meaning 'be implemented' rather than just 'implement'). In the låta sig construction, the following verb usually takes this passive -s form because the subject (databasen) is receiving the action, not performing it.

Could you just say kan implementeras instead of låter sig implementeras?

Yes, they mean the same thing and are often interchangeable. However, låter sig adds a subtle nuance that the database inherently lends itself to the process, implying it is well-suited for it. It also sounds slightly more advanced and formal than just using kan.

Is problem singular or plural in this sentence?

It translates best as plural, but grammatically the word looks the same either way. Because problem is an ett-word ending in a consonant, its indefinite singular and plural forms are identical (ett problem, flera problem). The phrase utan problem functions exactly like 'without problems' in English.