eXtremeDB's limitations

eXtremeDB imposes very few limitations. However, it is important to be aware of 
the following: 

• There is a limit of 64K (65,536) classes per database.
• Each class can have up to 64K fields, subject to a limit of 2^32 
  (4,294,967,296) bytes per object.
• An index can include 64K fields.
  
• A database can have at most 64K indexes.
• A database can store 2^32 (or 2^64 on 64 bit platforms) objects per class. 
• Vectors are limited to 64K elements (vector elements are indexed by an 
  unsigned 2-byte integer).
• Page size can be as low as 40 bytes and as much as 64K, but as explained 
  below, this is not a limitation in any practical sense.
• Strings are limited to 64K in size. If storing larger strings is a possibility, this 
  will require a blob field.