; A store database has four transactions.

$\backslash$table$[[$TID$,$Items$-$bought$],[$T$100,\backslash$table$[[A($$$1\mathrm{.}0),A($$$1\mathrm{.}1),B($$$550),B($$$550),C($$$1\mathrm{.}2),C($$$1\mathrm{.}02),],[D($$$200),E($$$1,000),F($$$3,500),F($$$3,500),G($$$2),H($$$2,500),],[I($$$3)$