Revision as of 03:37, 6 December 2007 edit Hellboy1975 (talk \| contribs) Extended confirmed users 740 edits →History: rmv POV. re-wording ← Previous edit		Revision as of 09:49, 14 February 2008 edit undo 122.57.193.150 (talk) →Architecture Next edit →
Line 8: ;Middle layer: Tables at this level represent orders to customers. A ''Data Dictionary Connectivity Object Tree'' defines how tables relate to each other, and ensures that all business rules of the connected tables are in force and validate. ;Top layer: A graphical user interface ([[GUI]]) that allows users to enter, find, create, modify, or delete data. ==History==

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