bidbidlidlistinglid listing

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Unformatted text preview: LID=Listing.LID Listing)= ∅. ∨!"#.!"#$%!!"#$"%&.!"#$"%&'()* 3. All bids need to be placed before the expiry time and after the posted time of the listing. б !"#.!"#$!!"#$"%&.!"#$%&'$(! (Bid⋈Bid.LID=Listing.LID Listing)= ∅. ∨ !"#.!"#$!!"#$"%&.!"#$!"!"#$ 4. No one can bid again with a new price if the current highest bidder of the listing is him/herself. Cannot be expressed. 5. Later bids have to be higher than...
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