Are you using a database or some form of in-memory data storage? If you are using a database there shouldn't be a problem. If you are storing the data in memory you could still use a database (SQLite allows in-memory storage - use ":memory:" for the file name). If, despite the terms you have used, you aren't database savvy, use a hash keyed by the inhouse ID as the table with a hash per row containing the data, then use a lookup hash per other indexed column which gives the inhouse ID as the value. Wrapping the various hashes up in an object makes good sense.

True laziness is hard work

In reply to Re: Looking for an existing package to crosslink different IDs with each other by GrandFather
in thread Looking for an existing package to crosslink different IDs with each other by colicab

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