I know its easy to do, The core switches will have no clue that there are VLANs since the one switch that I have split up will have dedicated links to the two core switches. What my question was how hard (secure) is it to jump between the two VLANs that reside on the same switch. The rest of the networks will all have physically isolated hardware and links.

I have a question about security of VLANs that I'm setting up for a friend of mine's business.

General Network Setup. There is a hard wired internal network, that has a firewall protecting it from a perimeter network, which in turn has a firewall protecting it from the open internet. The perimeter network is a mix of wired and wireless connections.

The issue is they are expanding and would need more ports in...

I wanted to use MySQL for storage of login information. Then I will have multiple services (RADIUS, Proxy, etc) checking against the information.
Is there a way to make a master table that will have all the information that is needed, then have a bunch of child tables that have the redundant information from the master table, however, only for the particular service. For example I want a table that only has login that is allowed to...