information_schema_catalog_name
   information_schema_catalog_name is a table that
   always contains one row and one column containing the name of the
   current database (current catalog, in SQL terminology).
  
Table 37.1. information_schema_catalog_name Columns
| Name | Data Type | Description | 
|---|---|---|
| catalog_name | sql_identifier | Name of the database that contains this information schema |