It depends on how the database is setup. Entire it is set to auto-grow - in which case there will not be a problem (as long as you have space enough on your disk). Otherwise you need to expand the database. When it runs full it will stop working.
You can check the current setting and expand the database from File->Database->Alter.
You can alter database as erik said you have one more option since you are using SQL database you can shrink the log file also.below query can be used to shrink log file here NAVDemo is database name
USE NAVDemo
GO
DBCC SHRINKFILE(NAVDemo_Log, 1)
BACKUP LOG NAVDemo WITH TRUNCATE_ONLY
DBCC SHRINKFILE(NAVDemo_Log, 1)
GO