Major database changes can be done more efficiently in MS Access, but all of the error checking the IMPLAN software provides is absent. A few caveats. First value added must be less than total industry output. Second, study area reports will not reflect the changes as these reports were generated when the model was first created. Modifications in Access do not trip the flags required to regenerate new Study Area reports. Subsequent reports i.e., Social Accounts, Ind x Ind and Multipliers will reflect the changes. A solution to this is to do a \"phony\" change using the Edit Study Area menus within the software i.e., for example, change a zero to a zero. Re-running social accounts will also generate new study area reports. Sometimes it is easier to introduce a new production function (absorption column) using MS Access. This table is populated when the social accounts are run and; hence, can only be modified in Access after creation of social accounts in IMPLAN Pro. Therefore, all Social Accounts reports will not reflect this modification, but all multiplier reports and impacts will. If your multipliers and impacts do not reflect modifications then there are two possible problems: The user has re-run \"Social Accounts\" with the \"Multipliers\". Running social accounts rebuilds the Regional Absorption Table wiping out any changes made. Therefore, do not check the box so that the social accounts are re-run. Only check the Multipliers box.
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