求翻译：Activities, transaction systems in general don’t evaluate alternative strategies or assist with decision making .supply chain planning systems ,now being termed Advanced Planning and Scheduling(APS) systems, are designed to assist in evaluating supply chain alternatives and advise in supply chain decision making. Sophisticated supply chain planning systems are becoming increasingly common to allow for consideration of complex alternatives under tight decision time constraints. Typical supply chain planning applications include production scheduling ,inventory resource planning ,and transportation planning .Using the historical and current data maintained in the data warehouse ,APS software systematically identifies and evaluates alternative courses of action and recommends a near optimal solution within the constraints imposed .Typical constraints involve production ,facility, transportation, or raw material limitations.是什么意思？

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