Database for key value pairs

Question

Which data base is most appropriate for storing key/value pairs? And the database should support mobile enviroment or devices.

Applications are intened to run on windows mobile and windows phone

Answer 1

There is really no simple answer to this with so little information. Take a google at "No SQL" or "Document Databases" - should find you what you need.

If you are after WP7 there are some good suggestions here http://nosql-database.org/