Note that an economic exchange does not require duality events to occur simultaneously. For example, inventory is reduced immediately by the sale to a customer, but cash may not be increased by the customer's remittance for several weeks. The REA model accommodates credit-based transactions and the associated time lags, but does not employ traditional mechanisms such as AR or AP ledgers in accounting for these events. In fact, REA rejects the need for any accounting artifacts, including journals, ledgers, and double-entry bookkeeping. As mentioned previously, economic phenomena should be captured in a disaggregated form consistent with the needs of multiple users. To reflect all relevant aspects of economic events, therefore, business data must not be preformatted or artificially constrained. Journals, ledgers, and double-entry bookkeeping are the traditional mechanisms for formatting and transmitting accounting data,
but they are not essential elements of an accounting database. REA systems capture the essence of what accountants account for by modeling the underlying economic phenomena directly.
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