10. Write a query to count the number of customers witha balance of more than $500.
FIGURE P7.9 THE CH07 SALECO DATABASE Relational diagram CUSTOMER VENDOR INVOICE PK,FK1 FK1 Cus Code Inv Date FK2 P Code Line_Units V State Table name: VENDOR Table name: CUSTOMER CUS CODE cus V CONTACT AREACODE V PHONE V STATEV ORDER CUS FNAME CUS 21344 Gomez Bros. Orteg 222-1672 s Ltd Table name: INVOICE Table name: LINE Table name: PRODUCT 11CER31 Power
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