How can we find which table is locked in the database? Please, suggest.
Find Locked Table in SQL Server
select object_name(p.object_id) as TableName, resource_type, resource_description from sys.dm_tran_locks l join sys.partitions p on l.resource_associated_entity_id = p.hobt_id
When reading sp_lock information, use the OBJECT_NAME( ) function to get the name of a table from its ID number, for example:
There is another proc provided by microsoft which reports objects without the ID translation : http://support.microsoft.com/kb/q255596/
If you want data automatically updated on a schedule, look into
cron (on Unix systems) or its equivalent. If you're using a commercial web host, they should have a way to schedule programs; otherwise, look into your own system's documentation for scheduling scripts.
Next, you want to write a script that downloads the weather information at that moment. Allow this script to translate from the "source" format to your own format.
Have the scheduler run your script once a day.