Edward questions

• Is there a method in MySQL to protect fields from changes?
• What algorithm is used for Reverse Geocoding using Geonames.org downloads?
• How do I use the PHP Simple HTML DOM Parser to parse this?
• Linux: How to find man page or different versions of Linux commands? [closed]
• Using "not in" on WHERE with AND?
• Is there an infinity or wild card for use of BETWEEN ranges with MySQL?
• How to determine the center zip code for each state? [closed]
• How to fix badly formatted JSON in PHP?
• How to handle Objects with arrays to access specific data?
• How should a crc32 be stored in MySQL?

Edward answers