These are technically incorrect simulations of MOO, but are more intuitive and actually simpler to implement. Objects which have not been used recently are swapped out, and therefore do not use RAM. - Table, buffer, and floating point support. Larger DBs have not been tested. Tables are lists which can be indexed by any MOO value. Tables are also sometimes called associative arrays, mappings, or dictionaries in other languages.
Tables are useful for a wide variety of tasks.
Once you start using tables, you'll see hundreds of possibilities for using them. Also, they're more efficient than using lists. In other words, a group of properties which each contain lists, with each element corresponding to every other element with that same index. This table makes the ages much easier to access. This is only one possible use of tables.