In addition to/instead of abstracting cmin/cmax to a phantom ID, what about allowing for two versions of the tuple header, one with cid info and one without? That would allow for cid info to be stripped out when pages were written to disk.
The downside to this is that we'd have to be able to deal with pages in-memory potentially being larger than pages on-disk. Since there's been discussion of separating on-disk and in-memory page formats, maybe that doesn't kill the proposal outright. -- Jim Nasby [EMAIL PROTECTED] EnterpriseDB http://enterprisedb.com 512.569.9461 (cell) ---------------------------(end of broadcast)--------------------------- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
