Description of configuration options for database

Configuration option = Default value	Description
[DEFAULT]
db_backend = sqlalchemy	(StrOpt) The backend to use for db.
sqlite_db = heat.sqlite	(StrOpt) the filename to use with sqlite
sqlite_synchronous = True	(BoolOpt) If true, use synchronous mode for sqlite
[database]
backend = sqlalchemy	(StrOpt) The backend to use for db
connection = sqlite:////usr/lib/python/site-packages/heat/openstack/common/db/$sqlite_db	(StrOpt) The SQLAlchemy connection string used to connect to the database
connection_debug = 0	(IntOpt) Verbosity of SQL debugging information. 0=None, 100=Everything
connection_trace = False	(BoolOpt) Add python stack traces to SQL as comment strings
idle_timeout = 3600	(IntOpt) timeout before idle sql connections are reaped
max_overflow = None	(IntOpt) If set, use this value for max_overflow with sqlalchemy
max_pool_size = None	(IntOpt) Maximum number of SQL connections to keep open in a pool
max_retries = 10	(IntOpt) maximum db connection retries during startup. (setting -1 implies an infinite retry count)
min_pool_size = 1	(IntOpt) Minimum number of SQL connections to keep open in a pool
pool_timeout = None	(IntOpt) If set, use this value for pool_timeout with sqlalchemy
retry_interval = 10	(IntOpt) interval between retries of opening a sql connection
slave_connection =	(StrOpt) The SQLAlchemy connection string used to connect to the slave database