Hi Mehdi,
The form with the drop down list will be filled in admin area only. All I wanted was to list all the entries on one page in front end the way described above. For now I managed to place the dropdown in the front page and when user chooses one city, the table shows entries only from that city. All the entries together are shown after choosing 'choose the city' option in the dropdown. It's not quite what I wanted to achieve, but it does the job.
But I have another question. Let's say I have a table in the front end with records (template seb_table), but I want the records to be dynamically enumerated in the first column, like:
1 Record
2 Record
...
n Record
What type of field could enumerate the records in the first column? Is there extra any programming needed?