Germany might not be the best country for NLP/IR but following universities are my recommendation
Technische Universität Darmstadt,
RWTH Aachen University
Facebook does not provide public posts search in graph API 2.0 but in 1.0 it does provide search of public posts. ( Facebook will no longer support 1.0 api in 2015 )
On the other hand you can search posts of your friends.
In Pakistan i remember there used to be some special numbers ( 3 to 5) digits. Whenever you dial those numbers from your mobiles this would eventually end up with already ongoing call.
Well MySql and Sqlite are RDBMS databases. They stores data in tables in the form of rows. Basic purpose is to eliminate redundancy, storage of large data.
Sql ( Structure query language ) is language that used to extract data from RDBMS databases ( SELECT * FROM table )
NoSql is another philosophy of databases which store data in key-value pairs. The basic purpose of NoSql is to reduce complexity. MongoDB , Redis, Cassandra are few popular NoSql databases.