Get character set and collation of a database

Query:

> use database-name;

> SELECT @@character_set_database, @@collation_database;

example output:
+---------------------------+-----------------------------+
| @@character_set_database | @@collation_database               |
+---------------------------------+-----------------------+
| utf8mb4                                    |  utf8mb4_unicode_ci                |
+---------------------------+-----------------------------+
1 row in set (0.00 sec)