On Thu, Sep 06, 2012 at 04:58:16PM +0000, Berry, Irene (CIV) wrote: > 1. Computer code: Has anyone successfully added .tgz or gripped tar ball > format for computer code? I don't see that format on the table of supported > formats, but I wondered if anyone has archived computer code successfully. > That is the format that has been proposed to me.
The categories are suggestions only. "Supported" means supported by *your organization*, as in: you undertake to ensure that the bitstream will still be accessible as format fashions change. You should review the lists of support levels and alter as needed. DSpace just stores and serves up the bits. Here, "supported format" means we're confident that we can recover the content from the packaging and rewrite it in some suitable new format, should the old format fall into disuse. That generally means it's an open, published format and we wouldn't be afraid to spend a reasonable amount of time building a converter for it, if we had to, or that open-source tools which can read it are known to be available. "Known format" means we think it should be usable over the long term but we make no promises. The other category (I forget the name) means "we'll store it for you, but we make no statements about whether it may be usable tomorrow." IIRC the categories and their members were carried over from what the MIT Libraries felt they could reasonably do to maintain repository content. Every site ought to think deeply about these lists and make adjustments for local conditions as needed. (Come to think of it, we probably ought to ship the format registry content as optional material and let people install it manually, to encourage local examination of the lists.) .tgz is an interesting case because it's a container format. That means that you have currency issues with both the .tgz and the stuff packed inside. .tgz ought to be "supported" here because 'tar' and 'gzip' are both well-known and published, and tools could be recreated from scratch without too much trouble if we really had to. Program code (however packaged) has a currency which is distinct from that. For example, Common Bliss programmers are becoming somewhat rare(r), so it might be infeasible to make that code run 100 years from now. (That also points out that you want to be very thoughtful about what you mean by "supported".) -- Mark H. Wood, Lead System Programmer [email protected] Asking whether markets are efficient is like asking whether people are smart.
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