[mssql]
pyodbc

[mssql_pymssql]
pymssql

[mssql_pyodbc]
pyodbc

[mysql]
mysqlclient

[oracle]
cx_oracle

[postgresql]
psycopg2

[postgresql_pg8000]
pg8000

[postgresql_psycopg2binary]
psycopg2-binary

[postgresql_psycopg2cffi]
psycopg2cffi

[pymysql]
pymysql