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* Close any open tables and clear the screen CLOSE DATABASES ALL CLEAR * Define variables LOCAL lcDatabaseName, lcCustomerName lcDatabaseName = "customer_bak.dbf" lcCustomerName = "Acme Corporation" * Check if table exists, create it if it doesn't IF NOT FILE(lcDatabaseName) CREATE TABLE customer_bak ( ; cust_id I AUTOINC, ; company C(40), ; contact C(30), ; entered_dt D ; ) ENDIF * Open the table in a new work area USE customer_bak IN 0 SHARED ALIAS cust * 1. CREATE: Insert a new record using SQL INSERT INTO cust (company, contact, entered_dt) ; VALUES (lcCustomerName, "John Doe", DATE()) * 2. READ: Locate the record using Rushmore optimization SELECT cust SET ORDER TO TAG company && Assumes an index tag exists, otherwise sequential search LOCATE FOR UPPER(company) = "ACME CORPORATION" IF FOUND() WAIT WINDOW "Record found! Updating..." NOWAIT * 3. UPDATE: Modify the contact name REPLACE contact WITH "Jane Smith" IN cust * 4. DISPLAY: Show the updated record DISPLAY FIELDS cust_id, company, contact, entered_dt ELSE WAIT WINDOW "Record not found." NOWAIT ENDIF * Close the table safely USE IN SELECT("cust") Use code with caution. 2. Advanced SQL Queries and Data Filtering

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