Sunnyvale Electrical. sells electrical parts to electrical contractors in the southeastern United

States. Sunnyvale Electrical customers mail their payments$$attached to the stub $($i$.$e$.,$ remittance

advice $[$RA$])$ from their monthly statement$$to Sunnyvale Electrical accounts receivable $($AR$)$

office. An AR clerk confirms that the check amount agrees with the amount on the RA and sends

the checks to the cashier. The AR clerk prepares batch totals of the customer numbers, invoice

numbers, and amount paid. The AR clerk then enters the batch totals and RAs into the computer,

where the AR master data are updated to record the payment. The computer reconciles the batch

totals, confirms job completion, and reports discrepancies, if any, to the AR clerk. Please refer to

chapter $11$ and $4$ for help in the diagrams and tables. Please use word or excel for the diagrams.

Problem $1$ prepare a table of entities and activities

Problem $2$ draw a context diagram

Problem $3$ prepare an annotated table of entities and activities. Indicate on this table the

groupings, bubble numbers, and bubble titles, to be used in preparing a level $0$ logical

DFD$.$

Problem $4$ Draw a level $0$ logical DFD